During a celebration (ex: Easter) when confetti eggs are involved, and someone cracks one either in your shirt or in your pants, and the confetti trickles down to your ass, leaving sweaty pieces of paper lodged in amazing places.
"dude she got you in the pants"
"yea man, you want some Ass-Fetti?"

"ahh you asshole, its trickling down my pants, *grabs said confetti from underwear* you want some back?"
"gross keep your ass-fetti away from me"
by Doinkingthings September 28, 2016
Get the Ass-fetti mug.
During a celebration (ex: Easter) when confetti eggs are involved, and someone cracks one either in your shirt or in your pants, and the confetti trickles down to your ass, leaving sweaty pieces of paper lodged in amazing places.
"dude she got you in the pants"
"yea man, you want some Ass-Fetti?"

"ahh you asshole, its trickling down my pants, *grabs said confetti from underwear* you want some back?"
"gross keep your ass-fetti away from me"
by Doinkingthings September 28, 2016
Get the Ass-fetti mug.