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The "Oh,no!" lumps in a fart that you knew in advance that you shouldn't have risked, due to recent diarrhea.
I felt the fartnuts, and knew that I had to go home to change my shorts.
by Rusty1231 October 14, 2009

Words related to Fartnuts

dingleberries sharts shitballs shitbits turdbits
When you fart so hard that it wiggles your nuts.
Oh man, you just ripped a fart nut!
by Laura March 14, 2005
when u try to do a fake fart, and it doesnt work, u have unintentionaly created a fart nut( when u shit in your pants and leave an annoying turd stain)
he was trying to be funny, but all he got was a fart nut
by slapapig September 23, 2003