uniball 

a man only having one testicle

Stevie K has is a uniball because he only has one testicle

uniball by mogger05 December 22, 2004

uniball 

to hit someone so hard in the nuts that their testicles fuse together into one. essentially its a really hard sackwhack

if u dont shut up im going to uniball you

uniball by herpderp123 August 24, 2010

uniball 

A pen making company

I have a uniball pen, and my friend thought the pen only had one ball

uniball by duhhh June 21, 2004

uniball 

An odd attraction in the form of a online game that draws out all nerds, geeks and people who generally don't shower.

I'd rather clean out the crabs from my pussy with a rake than to play another second of Uniball.

uniball by NickW June 10, 2004

Uniball 

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

Uniball by Don March 20, 2003

Uniball 

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

Uniball by ilovefeet August 4, 2003

uniball 

condition in which instead of having two testicles a man, they're so small that they appear like they only have one. which is usually an insult if you hear a girl talking about her boyfriend's uniball

p1: dude, tim is so hot!
p2: yeah he is....but i heard from katrina that he has a major uniball situation goin on
p1: *gags* oh snap. never mind then

uniball by feministica November 14, 2007