Chinky winky is the dirty smell coming out of a female's vagina during intercourse. It is mostly because of not washing yourself before sex. It is really common in long term relationships.
Dude 1: Man I was trying to hit but she had that chinky winky. Dude 2: What does that mean bruh? Dude 1: Chinky winky is the smell of yo mama's pussy when I swuskied.