Someone who engages in or promotes anti-social behavior as a form of trolling but is generally pro-social in most other aspects of their life.

Differentiated from a sociopath, who engages in anti-social behavior for material gain and other practical purposes as well as sadistic purposes(sadism isn't a prerequisite but it's absence is rare).

Also differentiated from a normal troll who's trolling may or may not be benign. For instance: baiting people in an internet forum with hyperbolic opinions or some variation of rickrolling may be annoying, but isn't considered anti-social.

When you eat dirt for the first time and leave your family to build a shack in the woods