A dictionary of slang - "M" - Slang and colloquialisms of the UK.

Maccy D's	Noun. McDonalds, the fast food company. Also occasionally Macky D's. [Orig. U.S.]
Mackem	Noun. A person from Sunderland. As used by Geordies (those born in Newcastle upon Tyne), from the vocal pronunciation of those from Sunderland. Also spelt Makem. Occasionally derog.
mad aleck	Noun. A person acting crazily and energetically. Usually heard applied to overenergetic children by parents or guardians. Also spelt mad alec and mad alick.
madam palm and her five sisters	Noun. The hand when employed as a tool for masturbation. Also madam palm and her five daughters. E.g."Tonight I'm going to please myself and spend some quality time with Madame palm and her five sisters." Cf. 'mary palm and her five sisters' and 'rosie palm and her five sisters'.
mad as a box of frogs	Phrs. Of a situation or person, totally crazy.
Madchester	Noun. The original alternative pseudonym for Manchester from the late 1980s, early 1990s, with the proliferation of the youth scene focused around the bands called Happy Mondays and The Stone Roses. Coined by two 'Geordies', Phil Shotton and Keith Jobling, resident in Manchester at the time. Cf. 'Gaychester' and 'Gunchester'.
made up	Adj. Happy, very satisfied. E.g."I'm made up about your good news."
mad for it	Phrs. Enthusiastic, eager. A nationally used term since the mid 1990s, originating from the Manchester district. E.g."He was mad for it... we couldn't get him to stop dancing."
mad hot	Adj. Extremely hot. [Manchester use]
mad keen	Adj. Very enthusiastic. [Manchester use]
mafted	Adj. Of a person, hot and bothered, oppressed by heat. Also mafting, pronounced maftin', relating to hot and humid weather. [N.E./Yorkshire use]
maftin	Adj. Hot and humid. E.g."Oh God! It's maftin. Can we go swimming today."
maggot	Noun. 1. A despicable, devious or obsequious person. 2. A small penis.
magic (!)	Adj. Excellent. Often heard as an exclamation of satisfaction. {Informal}.
magic sponge	Noun. The curative sponge employed by sports physios during events. The sponge apparently dispels symptoms on its application to an injured bodypart, as if by magic! Its magical qualities brings into question whether the sports contestant was actually injured at all.
Mahatma (Ghandi)	Noun. 1. Shandy. Rhyming slang. 2. Brandy. Rhyming slang.
mahusive	Adj. Immense, sizable, great. Probably from massive.
make a (complete/total) bollocks of something	Vrb phrs. To make a mess of something, to make a mistake. E.g."I don't think the job's mine, I made a complete bollocks of my interview."
make a move on someone	Vrb phrs. To approach and chat to a person with the objective of establishing a physical and sexual relationship.
make a row	Vrb phrs. To make a loud noise. E.g."I've got such a headache, the kids have being making a row all afternoon." See 'row'. {Informal}
make it snappy(!)	Vrb phrs. To hurry up, to do it quickly. E.g."Steve, the film starts in 5 minutes, so if you are going to wash your hair you better make it snappy." Exclam. Hurry up!
make mincemeat of (someone)	Vrb phrs. To beat up thoroughly, to utterly defeat.
make tracks	Verb. To begin a journey. E.g."OK, it's 8.30 and we've got to get to London by midday, let's make tracks."
mam	Noun. Mother. A less common variation on mum. [Northern use]
man boobs	Noun. Male breasts. Cf. 'moobs', 'man tits'.
Manc	Noun. A person from Manchester, England. Abb. of Mancunian.
M and S	Noun. The nickname for Marks and Spencers. Cf. 'Marks and Sparks'.
man-fat	Noun. Semen.
man in a boat	Noun. Clitoris. Cf. 'little man in a boat'.
manashee	Noun. A woman. Female equivalent of 'gadge'. Also manishee. [Scottish/North-east use]
manky	Adj. 1. Scruffy, dirty, distasteful, disgusting. 2. Poorly, unwell. E.g."I'm not coming into work, I feel a bit manky."
manmuck	Noun. Semen.
manor	Noun. The home district felt to belong to a person or gang.
man tits	Noun. Male breasts.
map of Tassie	Noun. The vagina, inclusive of pubic hair. From the similarity of the external female genitals to Tasmania. Popularized in the UK by the comic Viz. [Orig. Aust. 1990s]
mard	Noun. 1. A weak willed person, a softie. [Northern use] 2. A bad mood or temper. [Northern/Midlands use]
mardarse	Noun. A weak willed person, a softie. [Northern use]
mardy	Noun. Someone who is easily upset, scared, or moans incessantly. {Informal} [North and Midlands use] Adj. In the manner of someone who is a 'mardy', see noun.
mare	Noun. 1. A woman. E.g."You silly mare! Why did you do that?" Derog. 2. A terrible situation. Abb. of nightmare. E.g."We had a mare of a journey and got stuck in the traffic jams on the M25."
Marks and Sparks	Noun. Marks and Spencers, the department store. Also shortened to just Marks. Cf. 'M and S'.
marmite miner	Noun. A homosexual male. Marmite is a yeast extract spread. Derog.
marmite motorway	Noun. The anus. The expression, the British equivalent of the U.S. slang hershey highway, can be heard expressed in phrases such as up the marmite motorway, meaning up the anus.
marra	Noun. A mate, friend, 'pal'. [Cumbrian/ North-east use]
Mars bar	Noun. A scar. Rhyming slang. E.g."He was a really sensitive lad, despite that Mars bar making him look mean."
mary palm and her five sisters	Noun. The hand when employed as a tool for masturbation. Cf. 'madam palm and her five sisters' and 'rosie palm and her five sisters'.
mash	Verb. To brew a cup of tea. {Informal}
mashed	Verb. Utterly intoxicated by drink or drugs to the extent of being in a mess and unable to function normally.
massive	Noun. A group of people closely united by community and social interests and usually defined by geographical area, e.g. Moss Side Massive. [Orig W.I./U.K.?]
mate	Noun. 1. A friend. {Informal} 2. A form of address. {Informal}
mattress muncher	Noun. A homosexual male. Derog.
mazed	Adj. Mad, insane. [Devon use/ Dialect?]
meat	Noun. Sexual organs.
meat and two veg	Noun. The male genitals.
meat-head	Noun. A term of abuse, with the implication that the recipient may have more brawn than brains. Derog.
meat injection	Noun. An act of sexual intercourse.
meat market	Noun. A place or event where the objective of a sizeable number of those frequenting is to find sexual partners. Often used with regard to nightclubs.
meat wagon	Noun. 1. A police van. 2. An ambulance.
me duck	Noun. A form of address. Actually my duck. [Midlands use]
mee maw	Verb. To pull faces. From the exagerrated expressions made on the faces of conversing mill workers, in an attempt to make themselves understood over the din of machinery. [Lancashire use. 1900s?]
meff	Noun. A scruffy, unkempt person, and consequently an objectionable person. [Liverpool use]
mega	Adj. Fantastic, wonderful. [Orig. U.S. 1960s]
megabucks	Noun. A huge quantity of money. The term is used despite the expression 'bucks' (money) remaining firmly an Americanism. [U.S.]
melons	Noun. Breasts. The term usually refers to large breasts.
melvin	Noun. When ones trousers become caught up between ones buttocks.
member	Noun. The penis. Assumed to be from the latin membrum virile.
mental	Adj. Insane, crazy. {Informal}
mentalist	Noun. A crazy person, a mental case. Derog. [Orig. U.S.?]
merchant (banker)	Noun. A contemptible person. Rhyming slang, meaning 'wanker'.
merkin	Noun. An American. A pun on the word American sounding similar to a merkin. From the s.e. merkin, a pubic wig. Derog.
Mersey trout	Noun. A lump of faeces. From when the River Mersey was very unclean and poluted. [North-west use]
messages	Noun. Groceries, usually heard in do the messages, meaning buy the groceries. [Scottish use]
mess around	Vrb phrs. A euphemism for noncommittal sexual relations.
messy	Adj. Describing a very enjoyable time, at which there was extreme intoxication on drink or drugs. E.g."We had a great time at the weekend, it got very messy and I still cant remember what happened."
Michael	Noun. See 'take the michael'.
Mick	Noun. An Irishman. From the popular Irish name, Michael. Generally offensive.
Mickey Bliss *	Noun. 1. Rhyming slang on 'piss' and mainly heard in the expression 'take the mickey' ('take the piss'), meaning to ridicule. See 'take the mickey'. 2. Occasionally also an act of urination. Rhyming slang on 'piss'. See 'piss'
Mickey Mouse	Adj. 1. Stupid looking, comical. E.g."I'm not wearing that in public! It's a Mickey Mouse hat." 2. Second rate, of poor quality, cheaply made. Noun. A person from Liverpool. Rhyming slang on 'scouse'. Also Mickey Mouser rhyming on 'scouser'. Cf. 'scouse' and 'scouser'.
Mickey taking	Noun. Teasing, ridiculing. See 'take the Mickey'.
middle for diddle!	Exclam. An announcement at the beginning of a game of darts to determine who should throw first, the deciding factor being the nearest to the bullseye.
middle leg	Noun. The penis.
miffed	Adj. Annoyed, peeved. From the informal/colloquial verb miff.
milf	Noun. A sexually desirable and mature woman. An acronym of Mom I'd Like to Fuck. If not invented for the film American Pie, then certainly popularized by it. [Orig. U.S. 1990s]
milkers	Noun. Women's breasts.
minced	Adj. Drunk, intoxicated.
mince pies	Noun. Eyes. Rhyming slang. Cf. 'mincers'. [Mid 1900s]
mincer	Noun. A homosexual male. From the S.E. mince, an affected manner of walking.
mincers	Noun. Eyes. From the Cockney rhyming slang 'mince pies'.
mind-blowing	Adj. Totally astonishing or confusing. The term is derived from the drug culture of the 1960s.
mindfuck	Noun. A situation or person who gives one an mentally overwhelming and disorientating experience. Verb. To mentally confuse and overwhelm.
mind like a sewer	Phrs. A vulgar and sexually obsessed mind. E.g."Just ignore him, he's got a mind like a sewer and always."
mind !	Exclam. Watch out! Excuse me! An abb. of 'mind out'. [North/Midlands use]
mind out (!)	Verb./Exclam. Watch out! Excuse me! E.g."Will you mind out, I nearly ran you over in my car." [North/Midlands use]
ming	Verb. To smell or look unpleasant. E.g."Yearghh, that's disgusting! It mings in here! Which one of you has farted?"
minge	Noun. The female genitals. Derived from dialect, which ultimately may have its roots in the Romany, minj. [1900s]
mingebag	Noun. 1. A despicable person. Derog. 2. A miser. Derog.
minger	Noun. A physically undesirable, smelly, or ugly person. Pronounced with a hard G. E.g."It wasn't 'til we woke, the next morning, that I realised quite what a minger she was. I left pretty damn sharpish before she asked for my phone number."
mingin(g)	Adj. Rubbishy, unpleasant, smelly, dirty, undesirable. Usually heard pronounced as mingin'. [Orig Scottish]
mingy	Adj. Miserly, stingy. E.g."Don't be so mingy, share the chocolate with your sister."
mint	Adj. Excellent, wonderful.
minted	Adj. 1. Wealthy. E.g."Just because he's minted doesn't mean he's upper-class." 2. Excellent. [Northern use?]
minty	Adj. Scruffy, dirty.
misery-guts	Noun. A killjoy. Derog.
misog	Noun. A grumpy old man. Acronym of miserable old git. See 'git'.
(the) missus	Noun. The wife or girlfriend.
mitch	Verb. To play truant. Also mitch off. E.g."I'm not mitching off with my exams due next week." (Irish/ South West use?)
mither	Verb. To fuss, bother, pester. Also occasionally spelt moither. [North West/Midlands use] Noun. A complaining or persistently bothering person.
mits	Noun. The hands. E.g."Get your mits off my sandwich you thieving swine."
m'laddo	Phrs. A condescending form of address to a young male. From my lad.
mo	Noun. Abb. of moment. E.g."Just a mo, wait there and I'll be with you in one minute."
moaning Minnie	Noun. A person who persistently grumbles. Derog.
mob-handed	Adv. In large numbers, en masse, with respect to people. E.g."We went down there mob-handed and made sure they understood that it wasnt worth starting a fight." {Informal}
moby	Noun. A mobile phone. Adj. Sick, ill. Rhyming slang on Moby Dick.
mod cons	Noun. Abb. of modern conveniences. Also all mod cons. E.g."The house was large and well kept, but it lacked mod cons such as a flushing toilet." {Informal}
mofo	Noun. A contemptible person. Abb. of 'motherfucker'. [Orig. U.S.]
moggie	Noun. 1. A cat. Also spelt moggy. 2. A mouse. [W. Lancs use] 3. A Morris Minor (car).
moneybags	Noun. Someone who freely displays their current wealthy status. {Informal}
money for old rope	Phrs. Easily attained profit or reward. {Informal}
money shot	Noun. The male orgasm shot, that usually determines the end of a sex scene in a pornographic film. Originally porn industry terminology. [Orig. U.S.]
mong	Noun. Imbecile, idiot. Offensive expression alluding to someone with Down Syndrome, being Mongoloid. Verb. To reach a drugged state where physical activity is minimal and mental faculties are incapacitated. Used frequently within the 'ecstasy' fuelled 'house' scene. Obvious relationship to the derogatory version of the noun 'mong'. [1990s]
mong-out	Verb. Meaning the same as 'mong' (verb). E.g."Those pills were very strong, we only had one each but all monged out."
moniker	Noun. A name. E.g."What's your moniker? Mine's Ted."
monkey	Noun. �500. Occasionally and confusingly also £50.
monkeyhanger	Noun. A person from Hartlepool, in the North-east of England.
monkeytown	Noun. Nickname for the town of Heywood, Lancashire. Derog.
monk on	Noun. A bad mood, a temper. (Yorkshire/Nottinghamshire/NE Midlands use)
Montezuma's revenge	Noun. A bout of diarrhoea, a stomach upset, usually when caught abroad on holiday or travelling in hot climates.
moo	Noun. An objectionable woman. Derogatory but also jocular. Essentially the same as 'cow' but using the children's onomatopaeic name for a cow. See 'silly moo.'
moobs	Noun. Of a male, a build up of fat on the upper chest that looks similar to female breasts. A contraction of the expression 'man boobs'. See 'boobs'.
mooch	Noun. 1. To idle away time, to loaf around. 2. To amble along, to casually walk.
moody	Adj. Suspicious, not genuine. E.g."Don't buy any watches off that crook, they're well moody." [London use]
moo juice	Noun. Milk. From moo meaning cow.
moolah	Noun. Money. [Orig. U.S. 1940s]
moon	Verb. To reveal one's naked buttocks, usually as an insult or bawdy jest. Presumably from the similarly rounded and usually pale appearence of the bottom.
moonraker	Noun. A person from the town of Middleton, Manchester. Occasionally derog.
moose	Noun. A physically unattractive person. Used frequently from 1990s.
mopper-upper	Noun. A person or thing with the job or task of mopping up.
moreish	Adj. Appetizing and tasty when applied to foods, but generally inducing a desire for more. E.g."Hmmmm, this bakewell tart is very moreish."
moresome	Noun. Group sex, usually implying the number of participants being greater than 3 (threesome). [Orig. U.S.]
*more something* than soft mick**	Phrs. Having excess of something. E.g."Ever since she won the lottery, Jayne's got more money than soft mick."
mornge	Noun. A whingey, feeble person. Derog. [Lancs/Yorks use]
morngy	Adj. Moany, whingey, feeble. Also morngie and mawngy. [Lancs/Yorks use]
morning after the night before	Noun. The state of being in a hangover after the previous night's over-indulgence in drink.
morning glory	Noun. A erection of the penis on awaking from a night's sleep.
morph	Verb. To change shape or form, from the word metamorphosis. Popularized with the proliferation of digital film effects in horror/sci-fi films of the early 1990s, films such as Terminator 2.
mortalled	Adj. Drunk, intoxicated. [Scottish/Northern use?]
mosey	Noun. A look around. E.g."I'm just going to have a mosey around the shops."
moshpit	Noun. An area immediately infront of the stage at gigs where 'moshing' occurs. [Orig. U.S.]
moshing	Adj. A very physical style of dancing enjoyed by 'grunge' and 'thrash metal' devotees. Cf. 'slam dancing'. [U.S.]
mosquito bites	Noun. Small breasts. Derog.
motherfucker	Noun. A contemptible person. Occasionally shortened to mother. [Orig. U.S.]
motoring	Noun. Proceeding quickly. E.g."Now we have some up to date machinery we are motoring through the work schedule."
mott	Noun. Vagina.
mouse	Noun. A female's sanitary tampon. From the vague physical similarities, i.e. having a body, tail, and from being white.
mouth off	Verb. To talk loudly and without thought.
mozzy	Noun. Mosquito. Also mozzie.
Mrs palm and her five (lovely) daughters	Noun. The hand when employed as a tool for masturbation. Sometimes also preceded by a visit to, or going to see. E.g."If he spends any more time with Mrs palm and her 5 daughters, then he'll forget how to have normal sex." Cf. 'madam palm and her five sisters' and 'mary palm and her five sisters'.
muck about / around	Verb. 1. To mess around, or fool about. {Informal} 2. To idle away time. E.g."Are you mucking about up there, or tidying your bedroom?"
muck (someone) about / around	Verb. To disrupt someone's plans by one's inconsiderate actions. {Informal}
mucker	Noun. Friend. E.g."Alright my old mucker." [1940s]
muck in	Verb. To join in and assist in an activity or task. {Informal}
muck (something) up	Verb. To ruin something, to mess up. E.g."You really mucked that up didn't you?"
muck-up	Noun. A bungled event. E.g." That social around at Bill's last week was a right muck-up."
mucky	Adj. Rude.
mucky pup	Noun. A dirty person, affectionate use and often applied to a child. E.g."Look at the state of your clothes, you mucky pup! You've been rolling around in the dirt with Billy again, haven't you?"
muff	Noun. The female genitals. The innuendo being inclusive of pubic hair. [1600s] Verb. To spoil or fail. E.g."She muffed her chances of winning the race when she stumbled at the last hurdle."
muff-dive	Verb. To perform cunnilingus.
muff diver	Noun. 1. A person who indulges in cunnilingus 2. A lesbian.
muffin	Noun. An idiot, fool. E.g."She made me look like a right muffin telling her friends about my yellow polkadot underwear."
mug	Noun. 1. A stupid or gullible person. 2. The face. E.g."Get your ugly mug out of my house, now!" 3. The mouth.
muggins	Noun. A fool, someone easily outwitted, usually said with regard to oneself. E.g."That's right, leave it to muggins here, as usual I'll do the washing up." {Informal}
mugs away!	Exclam. Losers to start! An announcement to prompt the beginning of a new game in which the losers of the last are given the chance to start. Originally a phrase from the game of darts.
mug's game	Noun. A foolish activity. E.g."You won't get away with stealing cars for long, it's a mug's game." {Informal}
mug-shot	Noun. A photographic portrait. Often with regard to a police photo of a criminal or suspect.
mug up	Verb. To revise, learn. E.g."I've been staying in at the weekends, mugging up for my exams." {Informal} [Mid 1800s]
mullered	Adj. 1. Drunk, intoxicated by alcohol. 2. Physically beaten up. 3. Beaten, in competition. E.g."We got mullered in the football final."
mullet	Noun. A style of haircut, shorter at the top and considerably longer at the sides and back.
munch	Noun. Food, a snack. E.g."Can we stop at the next cafe and get a munch?" [South-east use]
munchies	Noun. 1. The urgent hunger experienced after having smoked cannabis or marijuana. 2. Food, usually for snacking.
munted	Adj. 1. Ruined. 2. Very drunk or intoxicated with drugs.
munter	Noun. An ugly person, usually applied to women. Also spelt munta.
muppet	Noun. An idiot, an objectionable person.
murder	Verb. To consume greedily. E.g."I'm so thirsty I could murder a cup of tea." {Informal}
muscle	Noun. A collective term for sizeable and strong people, gathered to utilize their strengths.
muscle Mary	Noun. A muscular, homosexual male.
mush	Noun. 1. The mouth. E.g."Shut your mush you noisy git!" 2. A term of address, usually used to attract the attention of a stranger. Derived from the Romany for man.
mushies	Noun. Abb. of mushrooms.
muso	Noun. A musician or person particularly interested in music.
mutant	Noun. A foolish or objectionable person.
mutt 'n' jeff	Adj. Deaf. Cockney rhyming slang on the cartoon characters created by Bud Fischer and popular after the Second World War. Cf. 'mutton'.
mutton	Adj. Deaf. Abbreviated form of the rhyming slang 'mutt'n'jeff'.
mutton dagger	Noun. A penis.
mutton dressed as lamb	Noun. A woman who dresses in fashions usually associated with younger females. Derog.
mutt's nuts	Noun. The best, the most excellent. A variation on the earlier expression, the 'dog's bollocks'.
my arse!	Exclam. An exclamation of denial or disagreement. Alternatively phrased as 'my ass!'. E.g."Poor my arse! He earns at least thirty thousand a year."
my left foot!	Exclam. A dismissive exclamation of denial or rejection.