Masterbexting 

One sided Sexting or sexting alone.

1) You might be Masterbexting if you send a sext and get a single word reply like 'No', 'Nope', 'Yup' or no simpley no reply at all.

2) You might be Masterbexting if you are playing both roles in the sext conversation ie:Replying to sexting messages back to yourself, after the original went unanswered.

Masterbexting by Hartford's Hubby October 31, 2011

masturbetting 

the act of betting a friend who can go the longest without masturbating (creaming the carrot)

So, my friend Jerry and I started masturbetting the other day after recalling all the wasted time we spent beating the meat stick.

masturbetting by Gastrogary February 20, 2011

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

masterbating 

Expertly jacking off.

Guy 1:Man, I think steve's masturbating again.
Guy 2: From the sound of it, he ain't just masturbating, he's MASTERbating.

masterbating by Sir Fizwheel Humperdink October 5, 2007

stealth masterbating 

When one wacks off as quietly as possible so as to not disturb the people in the same room.

Sam: I hope no one notices I am stealth masterbating
Girl friend: Sam ... are you wacking off!!!!
Sam: Oh Shit!

stealth masterbating by themanwiththeplan9192 April 4, 2010

Masterbating Monkey 

A primate creature who masterbates.

"Monkey Masterbation Spotting" has become a hobby in the South American State of illinois. A well known competitor in the sport of of Monkey Masterbation Spotting is Fred Phelps, a very vocal and fanatically religeous biggot.

The monkey wrapped his primate hand around his primate pink penis, and masterbated furiously untill he fell out of his tree. Fred Phelps watched in glee as he photographed the event so he could show the pictures to his family.

Masterbating Monkey by Gordon Freeman October 31, 2004

masterbating 

a common mispelling of the word "masturbating", which is the ING form of wordmasturbation

1337_g33k: Im masterbating to porn
Normal person: Good to know.

masterbating by Anonymous March 15, 2003