Top definition
When two males engage in a vicious battle using their balls as lethal weapons to try and injure each other.
Did you steel my cheetos? Uhh no. I challenge you to a sac fight.

Dude I just got knocked out by that guys sac.

I gave him a black eye with my sac.
by Double AyeD July 27, 2010
Get the mug
Get a Sac Fight mug for your papa José.