When you think it's safe to fart (YEP) but upon initiating the release (NOPE), you must quickly constrict the sphincter to prevent the flow of shittle from escaping the inter-gluteal cleft and ruining yet another pair of fancy pants.
Dean: Dude, why are you walking like a Penguin?
Jon: I just did a Yep Nope but not sure if I caught it in time...walk close behind me to the nearest bathroom!
Dean: You probably shouldn't have worn those baby blue yoga pants...just sayin'
Jon: I just did a Yep Nope but not sure if I caught it in time...walk close behind me to the nearest bathroom!
Dean: You probably shouldn't have worn those baby blue yoga pants...just sayin'
by Dr. Fancy Pants January 17, 2018
Get the Yep Nopemug. A mullet
by lulu and rere July 15, 2003
Get the yep yep nopemug.