I'm pretty similar, but that depends on who I am talking to:
Mom and dad: Apathetic, nasty, typical teenage shenanigans.
Friends: Funny, perverted, giddy when speaking of those whom I like (JLB, Dani Filth, etc)
Best friend: Perverted, cynical, giddier than normal (when speaking of JLB or Dani)
Sis: See "mom and dad", but amplified
Stranger: Chilled, nice, try to be as helpful as possible
Younger kids: REALLY nice, try to play it up
So it really depends.