股 grrrrrroin

Two grrroins can make a KOdomo.

A man's grrroin is an organ that throws a milky white substance known as "Mommy Fertilizer."

polite crotch ☆☆☆☆☆
股 (grrrrrroin) + 間 (a period of time) = 股間 (polite crotch)

a comparatively polite way to say "crotch"