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A euphemism for a mixture of constipation and pre-lining of your underware with shit stains, usually associated with high temperatures.

Derives from the Prince song "Black Sweat" from his 3121 album.
"I've been driving so long in this heat I'm working up a brown sweat"
by doughnut2128 May 26, 2009

Words related to brown sweat

constipation runs shit stains skid marks turtle head