A twelvie is a person that is between 12-14 who thinks they are cool and they fucking know everything, especially the girls who think they are hot shit and wear crop tops to the dairy. Twelvies usually think they are cool hooking up with people or going to parties. Twelvies are fucking annoying and they think they are better than everyone else. Twelvies are also known as teenie boppers. Fucking teenie boppers.
Twelvies:*wearing USA crop top, galaxy leggings and red vans* *goes to party* *smokes weed and drinks alcohol and thinks their cool but there parents don't know*
Person 1: oh did you see *name* at the party on Saturday smoking weed and drinking?
Person 2: yeah that fucking twelvie, she thinks she's
Cool smoking weed and drinking when she's 12. The only thing they should be drinking is milk and smoking those smoke lollies. Twelvie.
Person 1: oh did you see *name* at the party on Saturday smoking weed and drinking?
Person 2: yeah that fucking twelvie, she thinks she's
Cool smoking weed and drinking when she's 12. The only thing they should be drinking is milk and smoking those smoke lollies. Twelvie.
by wot_cunt March 10, 2014
Twelvies are (usually) 11-13 year old kids who, essentially, think they're more important/grown up than they really are, when actually these attempts at being more 'cool' and 'mature' just make them look less mature to those who actually are. They're quite naive and act like they know everything, when in fact, they don't. They often overuse stupid words such as 'swag'.
by ShelleyKnowsAll February 20, 2014
A person that is of the age 12. They think they're top sh*t. They think they own the place. They think they can win fights. They think they can do whatever they want. They act like there 16.
by Sarcasmm Queen April 7, 2015
Twelvie: Another word for a person between 12-15 years of age who is either a massive ganga/slut or who is a scooter fag who thinks they are cool by rollin round in big groups of other twelvies. ( Wannabe bikies )
Kids who think they are tough rollin around with their friends on scooters.
Non-twelvies talking:
Dude1:That girl over there was tunin on Jackson the other day.
Dude2:She was grindin on me at Sensations....
Dude1: LAWL fuckin twelvie ganga.
Non-twelvies talking:
Dude1:That girl over there was tunin on Jackson the other day.
Dude2:She was grindin on me at Sensations....
Dude1: LAWL fuckin twelvie ganga.
by Paul Schemier June 8, 2011
by Bananasinpjs March 30, 2017
by goblinMArtians January 29, 2012
A twelvie is a 12yo girl or boy that acts way older than they actually are, and acts ridiculously annoying. They also try to be cool, but epicly fail.
by COOKIEWOOKY October 3, 2019