Friend #1: I was have amazing anal sex with that filthy little filly Stacy and I pulled it out and put it deep in her bum, straight mud-flappin' bro.
Friend #2: Amazing, pure class.
Friend #2: Amazing, pure class.
by Timothy0Peden September 16, 2021
In other words, juss sassin' ya. Comes from da playful-but-annoying practice of coming up behind someone who's wearing a long jacket with a divided lower back, grabbing da jacket just above da slit, and then vigorously/rapidly yanking da lower part of da jacket in and out to make da pair of tails slap against da person's butt.
Me: If yer too warm, why doncha go take a dip in da ocean?
You: Jump in da ocean??? Are you crazy??? It's chilly and whitecaps-windy out there!
Me: I know, I know... juss flappin' yer coat-tails...! :D
You: Jump in da ocean??? Are you crazy??? It's chilly and whitecaps-windy out there!
Me: I know, I know... juss flappin' yer coat-tails...! :D
by QuacksO March 23, 2019
man that burnt toast was flappin man
by rockykat11 January 04, 2022
Usually describes a pesron who talks too much, whether about themselves or about alot of useless shit nobody wants to hear.
I wish that nigga would shut tha fuck up with all that Excessive Lip Flappin'! Nobody cares how big you think you are!
by Westside Digital Pimp April 16, 2022