When you poop in your hands and smack someone's bare balls with it.
I had to wash my nuts because I got brown sacked.
by Ana Appelbaum November 23, 2009
verb. To leave, to depart, to exit from, to get the fuck out of, to dip, to bounce out.
Dude, Jamie and i were about to have sex, but then i smelled her clam-like crotch and had to brown sack, so i went home.
by emoeed December 16, 2012