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.