backsterbate 

Two bros mastorbating back to back

Wanna go backsterbate later.
sure

backsterbate by bitchniggais December 13, 2012

Backsterbation 

The act of rubbing your back against the edge of a wall to relieve tension and pain. It's a well known fact that violating your home's jagged edges relieves stress, improves posture, and alleviates depression. Studies have also shown that regular backsterbation increases sexual pleasure and rekindles lackluster relationships. Common side effects include missing socks and blindness.

Daniel: Hey, bro. Could you give me a massage?

Noah: Nah, b. I'm in the middle of an intense game of Starcraft 2.

Daniel: Aw, man. I guess I'll just have to resort to backsterbation again.

Backsterbation by backsterbater4lyfe June 13, 2011

Backsturbating 

Rubbing your back against something to stop an itch.

Attendees of the meeting found Joe's backsturbating distracting.

Backsturbating by IDtenT September 12, 2014

banasterbate

When someone (usually a female) uses a banana as a dildo.

Jaime loves to buy the biggest bananas for banasterbatory purposes.
Only Chuck Norris can banasterbate without a banana.

banasterbate by nydavid12345 November 6, 2013

jacksterbate

the form of male masturbation; jacking off/wanking off

my guy friends gell me of their jacksterbate adventures

jacksterbate by gabbyxlover August 4, 2007

booksterbate 

the act of putting a book on your lap and kegeling a boner against it until you ejaculate in your pants.

i was in class yesterday and i could see right down this hot girls shirt, i couldn't leave so i had to booksterbate.

booksterbate by zevlin January 29, 2014

Backsturbating 

When you itch your back with a backscratcher and moaning

"I find it really disturbing when my dad starts backsturbating in front of me in the living room."

Backsturbating by ThatIdiot June 15, 2018