Boxterbating 

When two people get inside two separate boxes and masturbate in the same room together.

My sister and I live in a one room studio apartment. For privacy we practice boxterbating opposed to masturbating out in the open.

Boxterbating by Jesusisreal5 July 25, 2016

Busterbating

The act of masturbating on public transportation in view of other riders. Can be performed by a bus bandit or even by a driver or conductors. For an extra thrill, you can also videotape yourself and post the videos later online for others to enjoy. The solo version of a bus job.

"I was on my way to work this morning and the guy in front of me was either busterbating or he had one nasty case of crabs."

Busterbating by adurabull August 26, 2013

boozerbating 

the act of drinking alone

I was boozerbating while watching HIMYM last night.

boozerbating by umichbananna May 30, 2013

basterbating 

V. (Baz-ter-BAY-ting):
The act of masturbating using garlic bread or the grease from garlic bread. This has been known to cause plane crashes and affect Counter-Strike:Source performance positively.

Example 1:
Woman: "What happened to that plane!!!!"
Man: "The pilot was basterbating..."
Woman:"Ouch..."
Man:"Yep, Virgin Airways has lost 4 planes this year to basterbating. It's a tragedy."

Example 2:
MooN: "Woah, Grazi is bhopping like a boss!!!"
PedoBear: "Yah, what's up with that?"
Grazi:"Sorry, what? I was busy basterbating"

basterbating by MooN333 September 13, 2011

Boxerbating 

The ridiculous act of multiple fast paced simulated uppercuts and jabs without an actual opponent or partner.

Example:
Hugh Jackman, looked absurd boxerbating for the final 3 minute thrilling climax of Real Steel.

Boxerbating by P2 Pitt October 8, 2011