Someone, mostly a girl, who acts older than there age. They are try hardy, and where clothes much older than them. Also, they write, like the example below.
"Oh my god, I just totally got this "love the oc" top from supre. in pink!! its soo cool. my friends are like gonna love it!"
"Omg..diS iS lIkE sOoOo kOoliiiiieez!"