Its a sex act to where you blow in to a women's
vagina (assuming they have big droopy vagina lips)
real hard, with
your face crammed as deep as you can get it, and the lips slap your cheeks or face silly.
droopy nasty vag lips on a women, open her up smash
your face into her hole and make it as air tight as possible and blow. Watch the lips vibrate and flap in the wind. Other Words known as
English Double cheek slap (
Irish Kite Flying)