RubTub Machuggin' 

Excessively masturbating until the upcoming event of a raw and bleeding penis. RubTub; being the fun part of the event, and Machuggin; the perseverance to get to that point. This is the step Men achieve past Extreme levels of masturbating to reach a common and difficult nut.

Scientists say that RubTub Machuggin' is extremely unhealthy for anyone to accomplish. Studies show that too much RubTub Machuggin' can lead to a leathery foreskin.

We do not insist on anyone subjecting to RubTub Machiggin'; perform this only if you are an experienced RubTub Machuggin' licensed Machugger.

"Oh my God! Your foreskin feels like leather!" - Jane
"Yeah, I used to be really heavy into RubTub Machuggin'."-John

RubTub Machuggin' by JugsNRugs April 3, 2011

Machugina 

A machine's vagina; another word for Mark Ronson.

"Did you see Machugina in there? His pants were fucking blinding."
"Don't stick your hand in that machugina! It'll chop your finger off!"

Machugina by lollindsay December 9, 2008

Mashogging 

This is when you are showering with another and they(or you) are hogging the shower while masturbating at the same time.

When you are done mashogging can you please hand me some shower gel so I can get my job done too.

I boyfriend was mashogging this morning and he made me have to wash again and be late to my appointment.

Mashogging by MercyB March 1, 2009

Madmugging 

Giving threatening looks to another person meant to evoke fear of an imminent attack

The rival gang member was madmugging his enemy, by glaring at him in a threatening way meant to evoke fear.

Madmugging by Publiusj July 28, 2012