The desire to take a shit, or deffacate. Indicates an urgent need to poop.
"Dude, I gotta go. I got a big brown dog barking at the back door."
by Plankto February 07, 2007
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adj, generic, not outstanding in any way

etymology -
Use of brown dog as an adjective comes from conversational English:

"What kinda dog is that?"
"It's brown."
"Why's your video stream constantly cutting out?"
"My internet sucks. I got brown dog internet."
by waveofmist August 05, 2020
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When a girl/guy shits on a guy's penis during anal sex.
Guy: Bitch, you just Brown Dogged me!
Girl: Sorry, I forgot to shit before we got in bed.
by D-BoyFresh2011 July 21, 2015
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to be publicly embarrassed while already doing something embarrassing.
You're walking in NYC and you throw a finished drink into the garbage at the same time a homeless person is reaching into the trash can and some ice splashes on his hand. The homeless man's response: "Ahhh, you brown dogged me!"
by AndreaFromBuffaloNY August 15, 2014
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At work...
Travis: "Oh man, I've got a brown dog scratching at my door, I don't think I can keep him in until lunch."
Ann: "Come on, can't you learn to take a shit BEFORE coming in to work?"
by Shatrabel June 14, 2010
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The unsettling phenomenon of having a 'firmish' turd just barely emerge from your ass which, despite furtive foreshadowing, occurs both gradually and rapidly (simultaneously) at precisely the most inopportune point in time. Once the 'brown hound dog' pokes his head out you are thrust into the most tenuous situation of attempting to coax him back in the dog house (without your eyeballs popping out) a whilst continuing to make a presentation, speaking with a superior colleague in the middle of the lunch line, or trying to maintain that casual conversation with the woman in the Marketing department while on an elevator stopping at every floor.
Paul - Right after lunch Simms delivered the cable we've been waiting for and wouldn't you know it - it was oversized.

Gregg - Aaaa hey dude, listen I really can't talk right now - I gotta brown hound dog poking his head out and I got a bad feeling on this one.

Paul - Huh?
by Goodoldboy66 October 29, 2014
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