A characteristic tightness and or plumpness which a woman's (or man's) bum displays upon observation. This particular type of bum will instantly imprint an image of a tight, lubricated and hot bum in the viewers mind upon observation.
to intentionally pull your own pants down sit on a solid surface of some sort and fart. sniggledorfing is done in order to make the most noise and or best noise out of your fart. works well on metal wet surfaces.
after swimmingsal had to fart so he squatted over the pool and sniggledorfed the meniscus of the water