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

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

Assturbate 

Inserting an object up your butt while wanking

Being extra horny, I began to assturbate

Assturbate by cat litter boy May 4, 2014

Assturbate 

To finger the asshole

Susie likes to assturbate, you know, finger her asshole

Assturbate by David Ware May 12, 2004

Assturbate 

To use a butt to masturbate one's penis.

I never care about the face or the body. I just grab the hips and use that ass to assturbate my cock.

Assturbate by Fkrtist September 4, 2013

assturbate 

1. to clean the inside of your ass, usually before mooning, i.e. checing for toilet paper, etc
2. to play with your ass, like masturbating, but with anal sex
3. to touch the inside of someone else's ass

1. "dude, assturbate before you moon them, you dont know whats in there."
2. "you shouldn't assturbate, it maks the inside of your ass all itchy!"
3. "she groaned loudly as I assturbated her"

assturbate by baruchuh November 2, 2006

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