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

assterbate 

anal masterbation

That skank ho was assterbating with her butt plug

assterbate by fizgig April 7, 2003

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

assturbation 

To pleasure the anal cavity of oneself with the intent of sexual gratification.

I really wanted to go down on her last night, but when I got home she was in the middle of an assturbation session to the new Justin Timberlake video.

assturbation by decamel August 28, 2013

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

Assturbation 

Masturbation focused on pleasuring the butt, whether it be by massage or insertion.

Wow, this banana is frozen rock solid. I'm gonna have a good assturbation session tonight!

Assturbation by Twiggins Q. Neugebauer June 20, 2011

ashturbate 

The act of masturbating with a handful of a cremated person's ashes.

She was so hot before she died. If only I could get my hands on her cremated remains, I would definitely ashturbate.

ashturbate by wordman55 September 8, 2012