Proper terminology: taint vs gooch vs grundle

I've always viewed taint as a unisex term, indicating the skin between balls and asshole in men and between the "giney and the heinie" on women!

But Rech prefers grundle for men! Opinion seems split at urban dictionary, but I did find a new term, "gooch"!

From urban dictionary:

"A taint is the stretch of skin found only on women between the pussy and the asshole. The term originated from the phrase "taint an asshole and taint a pussy." In contrast the skin between the scrotum and asshole on a man is referred to as the "gooch" and first known usage is a reference to Bob "the gooch" Guccione the owner/publisher of Penthouse. His employees and acquaintances couldn't quite decide if he was more of an asshole or a dick, a general consensus eventually formed that he was both and "everything in between," hence the gooch."

Brilliant! :)

What are your opinions?