1 definition by Stenk

Cum Shot on someone's chest in the form of the Z from Zorro.
She wouldn't swallow so he blew his load on her chest. Did he at least onzo it?

The dude thinks he's a super hero in bed. Every time he has sex he throws down an onzo.

She freaked out about me blowing my load in her, so I just onzo'd her.
by Stenk December 29, 2009
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