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Ok, its when you got to take a shit so bad that the turd is already emerging from your asshole and the end of it is poking into your cotton underwear. Also know as browncappin.
1) Man, I got to get off the phone.....I'm poking cotton.

2) I didn't shit for a whole week but after I ate them tacos I was poking cotton.
by Ezeerider July 09, 2005
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