Troll Patch 

The squirrelly looking patch of facial hair that occurs at the bottom of the chin, often accompanied by a soul patch. Often seen on hipsters and other too-cool-for-school types.

That guy with the soul patch and troll patch looks like he could be a trumpet player, but I'm sure he's not really good at anything.

Troll Patch by sports turtle February 28, 2011

Troll patch 

The little patch of hair on ones big toe

A girl often has hairless legs and feet, except for her troll patch

Troll patch by Johny2424 December 4, 2011

Sour Patch Troll 

It's somebody who trolls on a forum or website, but then later apologizes for their actions and moves along to a different place to do it again. First they're sour, then they're sweet, then they repeat.

The sour patch troll made an obscene post on the forum, but later apologized for it.

Sour Patch Troll by Leetfaction December 9, 2010