1 definition by ObsessiveG

on it

if your want to do something or if you like someone you would say oh im on that.

u go n meet girls n 1 boy asks the other "are u on her" (do u like her)
or
u wanna go 2 a football match and u ask sum1 "Are u on it" (do you want to do that)

by ObsessiveG August 10, 2007