Top definition
A synonym of the word taint; grundle. Fleshy patch between the testicles and the asshole, usually covered with an unattractive "mane" of pubic hair ressembling a grody mustache, often accompanied by dookie residue and toilet paper balls and occasionaly a small nest of crabs that was not seen because it lies underneath the folds of the taint.
Often licked by cheap prostitutes paid bottom dollar to prove there worth to the savy consumer of fornication.
"If you want this five dollars you better lick my foo stache bitch!"
by robhole March 11, 2008
Get the mug
Get a foo stache mug for your Facebook friend Trump.