Definitions by poopybuttcheek

O'neil 

The last name of a kid that is a fucking dumbum and a brat. He will most likely kill you if you make funny jokes about him or he will just tell on the whooolleeee classsssss.

Did you see that guy having a temper tantrum? Yeah he must be an O'neil

O'neil by poopybuttcheek March 2, 2020