Fart flapping

When a female uses a vibrator so powerful it causes the vaginal lips to slap each other causing the lips to make a "fart" sound.

Sarah: hey Jen did you use the penetrator 6000 last night?

Jen: yeah it literally caused me to fart flap it was hilarious.

Sarah: oh Jen you love abit of fart flapping.

by nipsmandem May 18, 2014

fart flap

The triangular rear side window in some smaller cars having a hinge on the front edge and a latch on the back edge that opens about 2 inches.

That fart is horrible! Open the fart flaps!

by Lord Windowsmear June 30, 2014

Fart Flaps

Butt cheeks.

That one passed right through the fart flaps.

by TheBanchou July 01, 2017

Fart flaps

When a man gets so old that when he lays on his back his balls cover his ass hole

"Dude I woke up last night laying on my back when I farted so hard my fart flaps landed on my stomach, they are suppose to be snug under my dick"

by GnTMoose July 14, 2020