1. She had no knickers on and you could see her flaps
2. Sorry I didn't come out with you guys last night... I flapped it!!
By Feliza
Flap
After looking at manky things on your computer, you get up and jump about whilst flapping your hands by your side. While your neighbours watch you in a confuzzled way.
Blondie - Omg the guy across the road from me is flapping! Only twatty people like him would flap.
the act of unecessary and or excessive non-sensical word flow generated by females at a quick and unconsious pace. The origin of the flapping is the vagina.
plain and simple: a fart. ur asscheeks flap together
also known to happen during explosive diarrhea thus making the sounds and creating discomfort. the force of the flap may cause u to utter many high pitched jitters while exploding (just like in the movie dumb and dumber)