fart biter
An individual who must fart but is reluctant to do so, therefore tries to clench the sphincter in order to "bite" the fart off into smaller, less noticeable mini-farts.
The fart biter was desperately trying to escape the public eye so he could ease his smelly problem.
fart bubble biter
Someone who bites your fart bubbles cut loose under water to get them full strength.
"You're so pervo I bet you're a fart bubble biter!!!!"