Matherbating 

When one proceeds to independently stroke their genitalia for personal pleasure while studying mathematics, or math related activities.

Hey, did you hear that Kevin began matherbating today in Precalc when Mr. Johnson began talking about Matricees?

Matherbating by The Impactor February 28, 2011

Maskerbating 

Wearing a mask while completely alone

Before I even realized it, I was maskerbating in my car yesterday!

Maskerbating by Photoist July 28, 2020

maskerbating 

maskerbating - Wearing a COVID-19 mask while driving in your car alone or walking outside alone. Go do it into the privacy of your home.

I saw somebody maskerbating in their car with the windows up, and a COVID-19 mask strapped tightly onto their face.

maskerbating by Crackerguy June 10, 2020

Mangerbating 

Angrily masturbating, masturbating while angry

Noun: mangurbation

Last night I was mangerbating

Mangerbating by Mish da bish May 9, 2014

mathterbating 

Doing math for fun, enjoyment, entertainment and/or to pleasure ones self.

Dude1: Hey! whats that nerd over there doing with that calculator?
Dude2: Probably mathterbating
Dude1: Dude! sick he could at least go to the bathroom to do dat
Dude2: Gotta do what you gotta do

mathterbating by SeakingFuckYeah! March 4, 2008

masterbating with a cheese grater 

Doing a task that is not a good idea

Moving this piano without help is like masterbating with a cheese grater.

masterbating with a cheese grater by matt1975 September 10, 2012

mathdurbating 

1 pleasuring ones self during math class

2 how a person with a lisp would say masturbating

did you see that girl mathdurbating 4th period?

mathdurbating by Fiendish August 31, 2005