When you are lip-locked onto another persons butt-
hole and they fart into your mouth, so that you can then
blow that same fart back up their
ass, swapping back and forth and back and forth
Hey, you heard about Air Feltching?
It’s like snowballing a fart between someone asshole and your mouth. You don’t know a good
time until you’ve had your own warm fart blown back up your
ass.