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When your shit comes out like brownie batter and is usually smeared all over your butt cheeks. After the initial ten wipes it becomes very apparent when you have brownie butt. Typically taking several trips to the bathroom throughout the day to be fully cleaned.
dude 1: "You alright bro?"

dude 2: "No, I've had brownie butt since lunch."

dude 1: "Get a wet towel and take care of that shit."
by Timothy Burr December 19, 2007
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