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A direct derivative of piss battle. This type of battle was created when two piss battle combatants had a draw...that is, both bladders were burst. Neither contestant wanted to cease the battle so they decided to join their rectums in order to have a battle of the anal muscles.

1. The combatants join their anal cavities together and after forming an leaktight seal begin to push the defecate between eachother. These battles are often ended once one of the combatants has emptied their body of all defecate. At this moment the combatant may disconnect their anus from their opponent and claim victory.
Shit battles are epic.

Shit battles do not cause cancer.
by Argonak April 13, 2008
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The game that the hot twins in "Harold and Kumar go to White Castle" play in the bathroom. The game consists of diarrheaing by one person then the other person trying to match it or beat it in noise, stink, or both.
Tiffany: (in the bathroom stall) Hey Beth wanna play a game of Battle Shit?

Beth: Sure!

Tiffany: Diarrhea*

Beth: Louder Diarrhea*

Tiffany: Extreamly Loud and Stinky Diarrhea*

Beth: Tiffany you sank my Battle Ship
by Morgan B... July 14, 2008
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A game where you and a friend, or another person, bombs huge, loud shits in the toilet. The rules are simple...

1. Whoever bombs the loudest shit, out of both of you, sinks your battle shit.

2. Farts are included.

3. The game goes on until one of you bombs the loudest and biggest shit.

4. Have fun and enjoy the sweet, sweet smell of fieces.
Guy Numero Uno: *Bombs a garganutious piece of shit with a little poot at the end*

Guy Numero Dos: Dammit, you sunk my battle shit!
by Nippy July 28, 2005
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A fierce doo doo battle taken place in the stalls of a men's restroom between two dudes in adjacent stalls. Bonus points for a large splash, ear peircing fart, or sabotage smell. No one really wins this game.
Jon, "Dude I have to to take a massive shit after that taco bell."

Jeff, "Yeah me too my stomach is churning, dude lets play battle shit!"
by Jonny Dingo May 7, 2010
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The grueling cotest involving two people weighing in, before taking shits in adjacent bathroom stalls. I cannot stress how important it is that the dumps be simultaneous. After both combatants have finished. They must examine each other's specimen and then procede to weigh again. The winner is the combatant who had the heaviest shit.

In some countries battle shitting will hold up in court, such as for custody of a child or divorce hearings.
This Sunday on Pay-Per-View, Chip Brown "Streaks" will square off against Brian "The Human Corn Cannery" Harrell in a battle shits contest for the World Title. 29.99.

The over/under for betting purposes is 5 ounces.
by Jip! January 23, 2007
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based on the game battle ship, whenever using the bathroom and take a shit you try to hit it with the next one and sink it.
i was walking by the bathroom and heard billy yell you sunk my battle shit.
by carl shackelferd June 20, 2006
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A conflict between two or more dudes in adjacent stalls. Each participant attempts to make their epic shit audible to the dude sitting next to him.
"I battle-shitted the guy in the stall next to me. It was an epic win."
by Dredge2 November 5, 2007
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