Top definition
Underwear that has been filled to the brim with vile human excretion such as anal gravy, sweat, pussy juice, ass juice, butt nuggets, anal hot chocolate, and piss.
"Dude I fingered Tiesha last night, and then I smelled my hand and it reeked of stanky britches."

"I can smell yo britches and they're stanky."

"Hey I gotta change my under wear I have stanky britches."
by The K-dizz January 07, 2012
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