1 definition by Marlfox
Refers to an extremely large pimple, likely infected, that is normally located but not limited to: the forehead or back region of the body.
1. "Paul I'm not going anywhere with this volcano, it's hideous!"
2. "Oh God my volcano is about to erupt(all over the mirror)!!!"
2. "Oh God my volcano is about to erupt(all over the mirror)!!!"
by Marlfox March 6, 2012