Quantum Handjob Mechanics 

Also known as Quantum Handjob Theory, Quantum Handjob Mechanics is a branch of physics providing a mathematical description of the dual particle-like and wave-like behavior and interaction of the hand and penis.
Quantum Handjob Mechanics describes the time evolution of physical systems via a mathematical structure called the Cum Function. The Cum Function encapsulates the probability that an orgasm is to be reached in a given state at a given time.

Quantum Handjob Mechanics is closely intertwined with the Hymenberg Uncertainty Principle, which relates the fundamental principle that it is impossible to simultaneously measure the present proximity to an orgasm while "determining" the future momentum of a subsequent orgasm with an arbitrary degree of accuracy and certainty.

"Dude, I'm failing Naughty Physics."
"Why?"
"I just can't figure out these equations for Quantum Handjob Mechanics. I'm going to fail that test on three dimensional cum functions..."

Quantum Handjob Mechanics by Dzzo August 6, 2011

Handgina Shake 

When you shake a womans vagina via your hand to say good bye.

Wow, Eddy just met her and he gave her a handgina shake goodbye.

Handgina Shake by Ganjus October 18, 2008

Handai 

Friend, pal, buddy

Hey handai, where you been?

Handai by vitocs August 24, 2012

handball 

Australian colloquial use, meaning to unilaterally give responsibility for a problem to someone else. Comes from Australian Football, where the "handball" is the fastest legitimate way to dispose the football. The receiving player gets no protection if they receive a handball, they are subject to immediate tackle. Often when players are about to be tackled they desperately handball to a teammate, solving their immediate problem but often putting the receiving player in the same difficulty. Where the receiver is put in physical danger, it is a "hospital handball". Also known as the "hand pass".

Ian didn't want to deal with the difficult project, so he handballed it to me.

handball by timattrn November 7, 2017

Porcelain Handshake 

Throwing up in the toliet so many times that flushing seems as if you are shaking hands with the toilet.
Used in the song Tequila Headshake.

I was so hammered last night from those Tequila Headshakes, felt like I was giving a porcelain handshake all night.

Porcelain Handshake by Ed and Cam January 17, 2006

Like Handles 

n. When the lower side of ones body is not quite fat enough to be referred as a love handle but not fit enough to not be called a love handle.

Tyler: "I need to watch what i eat I have like handles."

Robert: "It could be worse you could be me and have love handles!"

Like Handles by Lakisha Jenkins August 21, 2008

Shake hands with Mr. Johnson 

To give a handjob to.
To repeatedly stroke a man's penis.

So how far did you go with him Tanya?
Did you shake hands with Mr. Johnson?

Shake hands with Mr. Johnson by Rusty86 May 25, 2009