A sexual act in which two brothers bind their left hands together, while simultaneously using their right hands to jerk each other off to climax. Whoever ejaculates first loses this battle of bound attrition, and the winner gets to finish off with the female sibbling of one of the participants (it doesn't matter which). "the Kentucky knife fight".
I dare you to a Kentucky Knife Fight, Tracy!
by VitaminM83 May 27, 2011