Monsterbating 

to pleasure yourself while drinking a Monster energy drink.

Igor seems hyper and distracted, he must be monsterbating.

Monsterbating by Tayvi February 4, 2010

Monsterbating 

When you jerk off so hard that its scary but it feels so good that you wanna squirt EVERYWHERE!

To being jerked off really hard and vigorously.

Honey! Why are you jerking off so hardddd!

Oh don't worry honey, I'm only monsterbating it doesn't hurt.

Monsterbating by Kajur April 2, 2013

Monsterbating 

The act of masturbating under one's bed or in one's closet with the intent to frighten.

Greg was scared shitless when he found Aaron monsterbating in his closet at 3 am.

Monsterbating by TheProfessor42069 October 14, 2011

Monsterbating 

When someone jerks off to pics of monsters, mostly erotic monster pics.

Fred: Hey, wanna go to a party later?
Jonh: No, man, im gonna stay home and I'll be "Monsterbating" all night

Monsterbating by realestguyintheroom November 1, 2011

Monsterbating 

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.

Monsterbating by YuppersDuppers October 31, 2015

Mooseterbating 

The act of jerking off, except you are a moose.

Person 1: Dude, do you see that moose?
Person 2: Bruhhhhhhh, is it Mooseterbating???

Mooseterbating by LooseYolky January 15, 2017

Mysterbating 

The act of overusing or abusing the social network of any kind

Person #1: Dude i sent you like 50 messages.
Person #2: Dude you are too in touch with this. Stop mysterbating.

Mysterbating by Georgio Lopezio June 17, 2010