When your mouth overides your ass. Talking way way to much about nothing. Not being able to stop talking.
Dude: that guy won't shut the fuck up!
Girl: yeah nigga, he's got a bad case of flapping yap syndrome.
Girl: yeah nigga, he's got a bad case of flapping yap syndrome.
by Nick"o"letty November 5, 2022
Get the flapping yap syndromemug. by Mortifera December 9, 2008
Get the Eggy Flapmug. by Max Guy September 21, 2007
Get the Elephant-flapsmug. Hey man, last night I had my face stuck in the piss flaps of Susie for close to an hour, I could barely breathe!!!
by Symphony of horrors August 29, 2022
Get the Piss flapsmug. by [bj] JackMehoff September 25, 2019
Get the Granny Flapsmug. by Yeahs banzai June 24, 2016
Get the flooply flapsmug. 