A male or woman who usually is turned on by the sound, smell, or discharge that comes from a fart.
While in the bed room, uauually the ass get special attention, in hopes of a fart.
Uaually a kid named Joel or Mark.
"pfft... OMG *sniff* ahhh..what a day to have a fart fetish"
Joel: Let me sleep on ur ass tonight honey.
Girl or Guy: No! Why
Joel: well.. sit on my face, so i can smell ur ass.
Girl\Guy: erg... ok