A word originating in Western MoCo (MD). Refers to when your texting someone, and they take a ridiculously long amount of time to respond.
"Mo, I txted you yesterday but you still havent responded. why you gappin on a man like that"
"Man I txted Jasmin like 7 hours ago and I shes sent me shit. Girls gappin on a brotha"
"Man I txted Jasmin like 7 hours ago and I shes sent me shit. Girls gappin on a brotha"
by TutnamTT October 07, 2011
A Gappin Mule is When a Man is Fucking A Donkey in the ass and his wife, girlfriend or whore is getting it from the Donkey.
by Eric W. The Destroyer Of Asses(NOT MEN) August 17, 2006