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When a woman jumps off a roof or out of a window, her fanny flaps act as a parachute
Robert; How did you not hurt yourself when you jumped?
Chloe; I used the fanny flapper trick!
by SlutbagTom March 21, 2016
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2
Another word for a woman who sleeps around.

(Flap thier Fanny)
•She's just another Fanny Flapper, you deserve better than that.

make sure she ain't no Fanny Flapper before you go for her, Son.
by Frank Fisterton February 21, 2018
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3
Another word for a woman who sleeps around.

(Flap thier Fanny)
•She's just another Fanny Flapper, you deserve better than that.

make sure she ain't no Fanny Flapper before you go for her, Son.
by Frank Fisterton February 21, 2018
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Get a Fanny Flapper mug for your papa Vivek.