The substance that comes from your anus and does not reach a toilet.
There's brownspill in my pants, on the floor, and in your hair. We'll need a mop to clean up all this brownspill.
by KeKinShore June 8, 2007
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The fecal matter that is discharged from the anus during periods of extreme stress or emotion.
After being stuck to the front grill of a semi truck and pushed eastbound on a Michigan highway for four miles at about 50 mph, authorities said the wheelchair-bound man had a full brownspill emergency in his pants.
by Western Command June 7, 2007
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