look up any word, like cleveland steamer:
 
1.
When someone tries holding back from pooping so long, that the end of the turd starts coming out of their ass before they can get to the bathroom.

Usually, causes skid marks in one's underwear...
"Damn! I am not going jogging again without taking a shit first. I was brown capping before I could get pff pf the trail"
by amos quito May 01, 2005
 
2.
Having an emergent need to defecate.
"I'm browncapping so bad I'm going to turtlehead if we don't find a bathroom soon."
by Crawlover July 03, 2004
 
3.
When all of the body's energy is devoted to a not-entirely-successful effort at restraining the exit-seeking brown monster.

(Chocolate kissing the tighty-whities)

Brown capping usually occurs in heavy traffic jams
by Renaldo Wynn August 16, 2007
 
4.
When someone tries holding back from pooping so long, that the end of the turd starts coming out of their ass before they can get to the bathroom.

Usually, causes skid marks in one's underwear...
"Damn! I am not going jogging again without taking a shit first. I was brown capping before I could get pff pf the trail"
by amos quito May 01, 2005
 
5.
A synonym for prairie dogging.
Dude, I have to crap so bad I'm browncapping!
by screaming j December 04, 2008
 
6.
when you have to take a shit so bad that its halfway out of your asshole
"dude you excuse me for a minute, I'm brown-capping really bad"
"I know u are, I can smell it over here for real"
by tinyballin32 July 10, 2008