(-ed, -ing) (verb) 1. Pleasuring one's self to Lady GaGa songs. 2. What Lady Gaga does with her vagina and penis. 4. Complete obsession with Lady Gaga
by GhastlyxGrizzly March 3, 2011

My friends and I monsterbate when we're thirsty.
by CDCEN July 1, 2008

The act of playing with one's monster unit in an app game in the restroom. At times, it is also done in public. It is a very vulgar act. Stroking, fingering, touching, and aiming are various ways in which one can play with their monster. At times, one can monsterbate furiously and come out not knowing how much time has passed.
Bob: Jim is taking an awful long time in the restroom.
Joe: He's probably just monsterbating in there.
To be caught in the act is to bring shame to oneself.
Jared: G..Gina! What are you doing here? I thought you left!
Gina: I forgot my keys. Wait, Jared? Oh my god! Are you monsterbating in public? Ew. That's just gross.
Joe: He's probably just monsterbating in there.
To be caught in the act is to bring shame to oneself.
Jared: G..Gina! What are you doing here? I thought you left!
Gina: I forgot my keys. Wait, Jared? Oh my god! Are you monsterbating in public? Ew. That's just gross.
by YuppersDuppers October 31, 2015
