Youth speak slang dictionary
Ah nam, verb: to tell on someone. Uncertain derivation, has been used in street gangs and by teenagers since around 2005.
Bare, adverb: a lot of, very. "She's got bare cats"
Boom, exclamation: a slogan of approval in inner-city London "I've just completed Candy Crush level 537... BOOM!"
Buff, adjective: sexy, fit. "That boy over there is well buff"
Bum, verb: to enjoy something, "You absolutely bum Eastenders"
Chung,adjective: extremely sexy "I'm looking for a bare chung lady"
Fo sho, exclamation: urban version of yes, for sure, certainly "Are we still hanging out on Saturday?" "Fo sho!"
Hangin, adjective: ugly, most likely with an unattractive body and bad dress sense to boot "Did you see what he was wearing? He was hangin."
Heavy, adjective: cool, interesting "Did you know that Kanye West is worth $120 million?" "Heavy!"
Howling, adjective: ugly
Mint, adjective: cool
Munter, adjective: ugly
Rinsed, verb: overused, used up, all gone
Sick, adjective: interesting, cool, never seen before. The more sick something is, the better. This usage originated with skaters and snowboarders.
Urban Dictionary Faves
Bicurean, adjective: describes a relationship between an omnivore/carnivore and a vegetarian/vegan
PPD, noun: Post Party Depression
YOLO, exclamation: you only live once, defined as “carpe-diem” for stupid people
Flabs, noun: the opposite of abs
Face Fro, noun: A huge unkempt beard
Lumbersexual, noun: A man who has a well-groomed beard, wears plaid shirts, looks outdoors-y but is more likely to be found sipping a flat white in a trendy café while tapping away at a laptop
Salt Daddy, noun: an older guy, dated by a younger girl, who literally has nothing to offer
Date Face, noun: the façade of being a stable, normal, attractive and healthy person on a first date. Easily leads to a second date but dissolves by the third.
Just Added to the OED
Food baby, noun: a protruding stomach caused by eating a large quantity of food and supposedly resembling that of a woman in the early stages of pregnancy
Girl crush, noun: an intense and typically non-sexual liking or admiration felt by one woman or girl for another
Fauxhawk, noun: a hairstyle in which a section of hair running from the front to the back of the head stands erect, intended to resemble a Mohican haircut (in which the sides of the head are shaved)
EMOJI, noun: a small digital image or icon used to express an idea or emotion in electronic communication
FOMO, exclamation: “fear of missing out” anxiety that an exciting or interesting event may currently be happening elsewhere, often aroused by posts seen on a social media
Bitcoin, noun: a digital currency in which transactions can be performed without the need for a central bank
Jorts, noun: denim shorts
Vom, verb: be sick; vomit
Srsly, exclamation: short for seriously
Squee, exclamation: used to express great delight or excitement
Selfie, noun: a photograph that one has taken of oneself, typically one taken with a smartphone or webcam and uploaded to a social media
Derp, exclamation: used as a substitute for speech regarded as meaningless or stupid, or to comment on a foolish or stupid action
Phablet, noun: a smartphone having a screen which is intermediate in size between that of a typical smartphone and a tablet computer
Twerk, verb: dance to popular music in a sexually provocative manner involving thrusting hip movements and a low, squatting stance
Check out this bang tidy dictionary the British Library threw together with the help of some youths.