Quiff stain is when a female vagina fills up with air from propetual thrusting and one good pump and the air escapes around the shaft of the penile instrument and if you extract the penile instrument and the air does not escape it will later on and as the air escape the vaginal crevase the excess semenal liquid escape like diareah into the undergarments there for leaving a "quiff stain"
It is used to deter predators when they peel the panties off and it looks like your spreading a grill cheese sandwhich "quiff stain" s are just wrong
by Longdongvagidist May 2, 2016