Butthole Explosion 

Whilst getting f'd in the a, inside of a hot tub, diarrhea involuntarily sprays out your rectum.

Drunk Girl in Hot Tub: Holy shit, i think im gonna (butthole explosions), OMG ahhahaha.

Everybody else: WTF?????? That bitch is fuckin whack.

Butthole Explosion by Kin Versoni June 7, 2007

texas butthole explosion 

The action of uncontrollable and aggressive projectile diarrhea when traveling, particularly in airports. Can be shortened to "TBE".

"I have a layover in Dallas"
"Sounds like a great opportunity for a Texas Butthole Explosion!"

texas butthole explosion by SaraSkeeter November 30, 2015