masterwhack 

To pleasure oneself.

I decided to masterwhack to that picture of Natalie Portman.

masterwhack by SeanPhysics May 2, 2008

mastershake 

When a man masterbates and wipes off his hand, but doesn't wash it. Later, He shakes someone's hand that he doesnt like.

My boss sucks so bad I mastershaked him today when we met.

mastershake by DrDigits December 20, 2010

masterjack 

-the act of masterbating with extreme force and power.

-Porn is for learning not masterjacking.
-Baby, I want you to masterjack on my face.

masterjack by honkeyslayor December 9, 2008

Masterwackit

To masturbate consecutively three or more times

Dude I definetly need to Masterwackit, she just left my house

Masterwackit by NickFrank July 26, 2010

masterjackabate 

an intense form of masterbating. make sure you have a llama handy.

Tyler: "what did you do this weekend?"
Sam: "Oh, nothing. How about you?"
Tyler: "I was by myself so I decided to masterjackabate. It was like serious masterjackabation."
Sam: "With your llama?"
Tyler: "DUH!"

masterjackabate by sexualpredator696969696969love November 4, 2009

Masterwhating 

The conversation or confusion between the words mastecate and masterbate. Usually between teenage boys.

Those guys were masterwhating all through the hall.

Masterwhating by LandH May 14, 2008

Masterlackivation 

The lack of motivation experienced after jerking off.

Zach was suppose to write a paper until masterlackivation set in.

Masterlackivation by the_wood December 26, 2009