Top Definition
The act of stuffing your cock and one testicle between your legs, while leaving one testicle out. Therefore creating a vagina with one ball. hence, the one ballgina.
1)have you ever tried stuffing your cock and one ball between your legs?
Yeah dude it's called a one ballgina

2)check out that guys one ballgina. It is revolting.

3)that guys one ballgina turns me on. It's so majestic.
by anusmagicmaker September 15, 2007

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