Absterbate 

to exercise one's abdominal muscles excessively

Joe: "How was your work out?"

Bob: "Oh, man, I absterbated until I core-gasmed"

Absterbate by Adam Snider February 11, 2009

Afterbate 

The akward moments after you masturbate and you clean up the jizz, put your clothes back on, think about how fucked up you are, etc...

Jack: "yo I just walked in on tom wiping his cock with tissues"
Tim: "ugh you saw him afterbate

Afterbate by M193 January 22, 2014

Assturbate 

To bring oneself to orgasm by various acts of anal-simulation.

Vanilla masturbation doesn't work for me anymore, now the only way I can cum is if I assturbate.

Assturbate by Tenshin_ April 7, 2016

assterbater 

A one legged man whore who masturbates other men in their asshole's! And/or any man who uses another mans ass to masturbate.

Me: Hey John stop being an assterbater you gay fuck!:)

Kevin: No fuck that, I like it when he uses me to assterbate.

Me: YALL BETTER CALM DOWN WITH THAT SHIT!

assterbater by Jer and Ca$H February 28, 2008

Assterbator 

Someone who frequently massages, plays with, grabs, pinches any part of their behind for self-pleasure

butt holer massager, Assterbator

Assterbator by Sasster2003 October 22, 2009

assturbate 

masturbating in your ass, or to sodomize yourself

"I'm going to assturbate with a dildo"

assturbate by Seth and Sam July 11, 2009

Assterbate 

Masturbating analy. Fingers or the daring fist(s). More unique rituals include feet and possibly penii (penis plural).

For more asstastic fun, see poopy chopsticks

"Oh man that assterbation was awesome."
"yea my foot is brown!"

Assterbate by BobbyZ December 19, 2003