Best definition
wrinkle binkle
A small crease on a ladys bum that guys love, some find it very sexual, some guys get turned on

and some think it’s odd. But we only love wrinkle binkles on slim sexy women. not fat bottom girls

Guy 1: Damn, my girlfriend has a wrinkle binkle on her sexy body.

Guy 2: Your so lucky, my girl has a wrinkle binkle, but she’s just fat.