Harbshake 

The act of shaking the losing coaches hand so vigorously, that his feelings, along with the bones in his hand, are hurt.

Did you see the Harbshake Harbaugh gave Schwartz? Must have broke his spirit, along with his fingers.

Harbshake by NW49erFaithful October 23, 2011

bavarian handshake 

The act of passing one's hand through one's own lederhosen crotch flap, to shake someone else's hand. Popular at German (and German-themed) festivals.

Franz's Bavarian handshake caught me off guard--but what a grip!

bavarian handshake by Lawrence Main June 25, 2017

Vagina Handshake 

How Trump Greets a beautiful woman.

When you're rich or a celebrity, you can do pretty much anything you want, so when I meet a beautiful woman I walk right up to her and grab her by the pussy, and give her a vagina handshake.

Vagina Handshake by Chas501 December 31, 2016

Bingley Handshake 

A good old fashioned wank into an abandoned sock or glove

Bingley Handshake

Bingley Handshake by Greg_the_Smeg February 14, 2019

Nervous Flyer Handshake 

When the person on the flight is apprehensive to fly so you help them relax. Typically by manual sexual stimulation.

Woman in the seat next to me was worried about flying. Let her give me a nervous flyer handshake to calm her down. Not sure about her but I need a smoke.

Nervous Flyer Handshake by HomerJ71 October 29, 2019

Handshakes with Snakes 

Verb: (ˈhan(d)ˌSHāk/,wiTH/snāk-S/) Orig: Victorian England c. 1535(AD)
Slang verbiage, historically meaning "clandestine hand-jobs with strangers".

Modernly, it is used in conjunction with, or to replace the verb "fap" or "fapping" in groups(strangers or otherwise).

Ed liked handshakes with snakes, at the park, on sunny afternoons.

Allen and his friends had a handshakes with snakes session, all afternoon.

Handshakes with Snakes by FaeSkrinkles42 May 18, 2016

Scomo Handshake 

When someone tries to shake your hand but you don't want to.

So they pick up any one of your hands and shake it like a dead fish for a second and then drop it down and walk away.

Named after Australian Prime Minister Scott Morrison aka "Scomo" who went on a holiday to Hawaii during the 2019/2020 Australian Bushfire National Crisis.

"I saw a cute girl at a party and she didn't want a bar of me so I gave her a "Scomo Handshake."

Scomo Handshake by WazfromAus January 3, 2020