on99

so fucking stupid
chinese pronunciation

mum: dont go to bball
me: on99

by urlifehk June 29, 2003

ON99

A Dumbass, fool or whoever done something stupid and we call them ON99(on-gill-gill).

John 's action were totally on99.

A: Why you think Ghost exist Tony ?
B: You are on99 for asking that kind of stuff.

by Hedgehog111 January 11, 2016