A 12 is a guy/KID that signs up for a site 13+ or is grammatically incorrect in all ways...no offense to actually 12 year olds. Just a analogy
by 12mastazz April 7, 2011
11-13 year old pre-teens, who act like their grown up, while looking naive and immature to older people.
by brendons_forehead October 11, 2015