Classterbating. 

To jack off in class, if you go to a LAP TOP school, and you sit in the back, have a party!

When you shake your dick in class, to a porno on your laptop, its Classterbating.

Classterbating. by TiGGLE BiDDY March 10, 2010

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

Classterbating 

Masterbating in a school class or other meeting with peers

Dude, Joe was totally Classterbating in science yesterday!

Classterbating by Hater Hater gettin Taters April 4, 2015

classturbating

When you sit in class and caress you dick until you ejaculate all inside your school pants. You are addicted to masturbating and you can't go a class period without jacking off. You usually don't realize that everyone is watching you and making fun of your addiction

Dude, I totally saw that kid Brendan classturbating in Spanish the other day. He got up and there was jizz all over his pants!

classturbating by JuicyAzz SparkleTitz December 17, 2008

classturbating

the incessant referral to how classy one is. masturbating your own ego about being a really classy person. verbally jacking yourself off because everyone else probably thinks you're a real horse's ass. read: the opposite of classy or having class.

"why does she keep talking about how she's the classy one in this feud"

"she's just classturbating. she's a chronic classturbator".

classturbating by yeahbuddyyeah July 8, 2011

Cussterbating 

The act of swearing as you masturbate furiously.

"I heard him cussterbating last night again. I didn't get any sleep for hours."

Cussterbating by Race Pro Kid November 13, 2013

Classterbation 

When one gets the sudden urge to bust a nut midway through class. Normally applicable when there is a sexy female in the area.

Student 1: Hey man, did you see that new girl? she was wearing a skirt and i classterbated after i saw her!
Student 2: Dude.... gross.. Classterbation is disturbing.

Classterbation by NutBustah April 13, 2011