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1.
After a particularly hard night on the piss, and suffering a brain-melting hangover, a Comfort Poo is the shit you have that flushes most of the toxins out and eases the pain.

It could be the 2nd, 3rd or even 8th crap you take that day, but you will know when it's your Comfort Poo. Because the hangover will finally have crawled back into the fiery pits of Mordor, whence it came.
Bob: "Ahhhh, I just had a Comfort Poo."

John: "Hangover gone then?"

Bob: "You betcha."
by Centaur23 June 10, 2011