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A flap-flap is an alternate name for winged animals mostly pertaining to fowl and bats. Other mammals that have folds of skin that can act like wings such as sugar gliders and flying squirrels. Insects and other mammals that use their extra skin to maneuver can be their own genus of flap-flaps including stingrays, dragonflies, butterflies and honey bees with the exception of wasps who are just assholes.
Flap-flap... Makes me smile just saying it
by Itsybitsymissy January 11, 2016
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2
during sexual intercourse, the sound two bodies make while knocking boots
that girl was flap flap all over the place.

did you hear about her raw flap flap wetness last night?

by your mom's name goes here June 03, 2006
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