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1.
not totally unlike a shart a flarple is used to describe the passing of gass with the anus sphincter walls vibrating to produce a rumbling bass effect, with a hint of lubrication to create a lower ending sound. Can also be used as a put-down
That fart sounded like a real flarple.

Hey you f'ing flarple why did you do that?
by Judge Shmendric January 18, 2008
6 1
 
2.
When you need to fart and it somehow winds up bubbling out the front way through your vagina flaps and makes kind of a "flarple flarple" sound.
The princess was mortified after she flarpled infront of her potential suiter at the ball.
by Tournikel September 11, 2011
1 1