when a female wearing a mini skirt/ short skirt/short dress, etc and then opens her legs when sitting down, or falling over triping over, etc and then exposes the front of her panties/undies/thong/g-sting, etc!
Usally turns on many guys (males) (straight ones).
See that hot as chick over there...sitting down with that mini skirt?
She is give a great pie shot hey mate?
Fucking oath mate...fucking oath!