The sexual act of inserting the filter tip of a lit cigarette or other smokeable object into a woman's vagina to the extent that it is followed by a thick, ashy queef; a bilious ash cough if you will; a sooty vaginal discharge. Typically performed in opium dens, shit-head bowling alleys, or other designated smoking areas.
1. Chick totally quashed in my face, and now I look like I just climbed out of a mineshaft.
2. Well, honey, it doesn't look good. The doctor says I have quash-induced lung cancer.
3. Yeah man, totally went to a quash-bash last night. When I came home, I looked like Al Jolson in 'The Jazz Singer', and sounded like that sweet weapons guy from Mystery Men.