Fartnight

The agonizingly long period that an especially pungent fart hangs in the air after being released.

"Dude after you ripped that one, it smelled like ass for a fartnight!"

by ToxSick1333 December 9, 2012

Fartnight

Similar to a fortnight (2 weeks) this is the period of time that the odor lingers around when you fart and you shouldn't have...like in church or in an elevator.

Jesus, and here I thought this would be an SBD non-stinker but it turns out it was a fartnight with a capital FART!

by here_and_there August 30, 2017