Does anyone remember the albeit brief period in about 1984-ish when styled "overalls" were quite the fashion amongst young ladies?
A lass I knew of - work-colleague of a mate, had a white one. It was quite close-fitting, and she was slim in all departments. After a few sherbets on a Fri pm an Alpha male came up and said "What happens if I undo this (pointing at the zip)", as he then took hold of the zip-pull and lowered it swiftly and fully.
One almighty slap followed a spilt second after all the goods had been displayed.