classturbate 

To masturbate while in class.

Especially if you are sweating like a whore in church and screwing your face up as if you are constipated.

See also classturbation.

1. Dude, did you see Bryan classturbate after that biology test?

2. Oh Em Gee, are you classturbating?

3. Did you see that facial expression he made while he classturbated?

classturbate by Larry Knickerbockers August 17, 2005

Classturbate 

When you get a raging erection in class and can't resist.

Taking your boner out of your boxers and moving your thighs side to sidee while yoor penis gets stimulation from the rubbing- classturbate

Classturbate by classturbator69 September 13, 2012

classturbate 

when one secretly or not so secretly masturbates during class.

Look at that kid he's classturbate in the middle of class

classturbate by moneysideofthemoon October 24, 2011

Classturbate 

To masturbate while keeping the pinky finger completely extended

Woah bro, learn some manners when you jack off in public at least learn to classturbate!

Classturbate by Fuzznutz August 25, 2013

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

Crapsturbate 

Masturbate while taking a dump; Fapping and shitting at the same time.

The other day I was so horny that I decided to crapsturbate in the public bathroom.

Crapsturbate by Anonymous Billybob Joe January 15, 2008

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