Piemont's ridge 

A specific anatomical region located between the anus and penis of a male. After the act of feces release, feces often collects in Piemont's ridge. Those oblivious to this fact will generally have a nasty butt region.

Girl: I gave John a rim job and it was great until my mouth grazed Piemont's ridge, after that my face was covered in shit.

Patrick: My butt has been itchy all day and it smells like crap.
Dan: You clearly didn't know to wipe Piemont's ridge.

Piemont's ridge by Koooch May 18, 2010

Piemont's Ridge 

An area of interest in the grundel/taint region after fecal deposition. Dingleberries tend to collect at the base of the ridge usually necessitating additional wipe(s).
Discovery of Piemont's Ridge has set the stage for debate between front-to-back wipers and back-to-front wipers.

Front-to-back wipers must avoid starting their wipe after the ridge for fear of missing it altogether.

Back-to-front wipers must ensure that they wipe all the way through the ridge to collect all fecal matter.

Not only have I started wiping back-to-front, but I've been going through twice as much toilet paper since I've discovered Piemont's Ridge.

Piemont's Ridge by J My May 25, 2010