classturbation 

To be in a class so boring that you take your non-dominant ( or dominant) hand and reach into your pants pocket and proceed to stimulate your genitals.

Matt: Dude that class was so boring, I just classturbated the whole time.

Nadsack: Me too. Classturbation helps with my tourettes.

classturbation by cockjuggling thundercunt March 21, 2009

Classturbation 

When you fantasize about classmates while fondling yourself.

"I hear Jason is in to Classturbation."

Classturbation by Cgtheberzerker September 9, 2015

classturbation 

To be so bored during a class that you secretly reach your non-dominant ( or dominant) hand into your pant pocket and proceed to stimulate your genitals.

Matt: "Dude that class was so boring, I just classturbated the whole time."

Nadsack: "Me too, classturbation helps with my tourette's."

classturbation by Dustin Englhart March 21, 2009

classturbation 

1) to covertly masturbate in school.

2) a class which teaches you nothing and serves no scholastic goal.

this human sexuality course is pure classturbation, in more ways than one.

classturbation by the moody booze August 3, 2008

crassturbation

The act of masturbating at an extremely inappropriate time, with little respect for the feelings of others in the vicinity

John: Bob, we're at a fucking funeral, stop jerking off in the corner!
Bob: Why? Masturbation is perfectly healthy!
John: That's not masturbation, that's crassturbation.
Bob What's that?
John: Look it up on Urban Dictionary.

crassturbation by derpymuffins June 18, 2014

classterbating 

Classterbation: The art of girls crossing their thighs over their pussy and flexing their thigh muscles, which scrapes their jeans over their clit.

Twiggy: Yo, did you see Aubrey classterbating in Chemistry?

Zach: Yeah, she was sweating like a whore in church.

classterbating by Twiggy Lanky Man April 10, 2008

Casturbation

Casturbation relates to the art of masturbating whilst wearing a cast (caused from broken bones somewhere between the individuals wrists and shoulders).
It can often require a lot of patience and training depending on the size and location of the cast.

Dan: Must be hard for you, being single for the last 7 months and not even able to choke the chicken with that broken wrist?
Jeff: It was rough for the first month, but casturbation is really my only option

Casturbation by neilsonz January 27, 2009