Having one testicle inside of the scrotum instead of having the usual two. This normally produces half the amount of semen as having two.
Dave lost his testicle in an accident so he then had a uniball
by Don March 20, 2003
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"brian earp"

talk to him on roadkill0066...hes an interesting guy with one testicle
by brian earp February 23, 2004
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When you get a really good atomic wedgie, you can lose your ball in your stomach.
Chase, shut your uniballed mouth!
Your half the man I am
by ilovefeet August 5, 2003
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When you have one testicle tightly packed in your ballsac to the underside of your cock
Gaz has a uniball
by Timmyyyy January 17, 2004
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When your lipstick comes out to play, but your uniball says “no way!”
Dustin had a girl to pick, too bad he had a uniball lipstick.
by Russianmercedes30 August 2, 2019
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