When two men thrust their sacs at each others while kissing (preferably tongue) until someone gives up.
1) Weiners must be strapped to the stomach with an elastic band.
2) Hands behind the back at all times (Allowed to finger oneself mid-game).
3) Lips must be locked the entire game.
4) No Footsy's. Thats for fags.
5) NO GIRLS. Unless its a hermaphrodite with a sac.
6) Loser must tickle the winners prostate until they cum
Me: Yo BJ I heard you just lost to your dad in Sac War.
BJ: Yea, I have internal bleeding in my nuts and my finger smells like poop.