A sex act in which the participants willingly have intercourse in a bathtub full of feces resulting from diahrea.
Greg Gauvin was turned on by that bitch's tits, so he offered her a brown bath back at his place.
Something that makes a golden shower look like child's play. Not to be confused with the Iraqi Baathist party.
If my project manager doesn't cut me some slack, I'm gonna give her a brown bath! That moleyak! Cordejo.