When somebody sees you sneeze, blow your nose, scratch yourself, or touch something dirty just prior to shaking your hand, and you are forced to use your left hand instead of your right to avoid further embarrassment and grossing the person out.
Dialogue involving a reverse handshake:
1: Hi, 2! (reaches to shake 2's right hand)
2: (quickly sneezes, grabs a tissue to quickly clean his right hand and shakes using his left hand.) Sorry, Hi!
1: Hi, 2! (reaches to shake 2's right hand)
2: (quickly sneezes, grabs a tissue to quickly clean his right hand and shakes using his left hand.) Sorry, Hi!
by redblade77 January 11, 2009

To insert one's middle, ring and index finger into a vagina and with your thumb against her clitoris and your little finger on her perinium (better known as the taint). You rotates your wrist to stimulate the clit/perinium and move inside her.
by Ajedrez April 26, 2007

by T-bone Jenkins August 9, 2008

by Malkontent42 September 18, 2010

Euphemism for manual stimulation of the male penis by a dirty hooker (for money) employing the non-dominant hand and lubricated by bearing grease.
Todd was so poor, he couldn't afford a bj from a real hooker, so he had to settle for a downtown handshake from Holly Herpes behind the Jr. Food Store.
by leedlicks247rocker April 27, 2010

The act of reaching into a self-contained toilet paper dispenser and instead of retrieving a bundle of TP, you unknowingly smear your hand with fecal matter left from the previous occupant of the stall that you are currently using. Known to occur regularly to both men and women, but an inordinant percentage of the recipients are from or near the city of Hamilton,OH. The same act is performed in various cities across the US under different names, such as: Cincinnati Silly Putty, Kansas City Knuckle Duster, Pittsburgh Pudding, and Albany Applesauce.
Tom: Hey, Mary, what's wrong?
Mary: Ewww! I was in the shitter and when I went to wipe I got a handful of poo!! Eww....gross!! I got the Hamilton Handshake! It was packed in there like ceiling spackle!
Tom: Yeah that's gross. Lemme have a dollar. Wait, you can keep that dollar!
**watches as poo stained dollar floats to the floor**
Mary: Ewww! I was in the shitter and when I went to wipe I got a handful of poo!! Eww....gross!! I got the Hamilton Handshake! It was packed in there like ceiling spackle!
Tom: Yeah that's gross. Lemme have a dollar. Wait, you can keep that dollar!
**watches as poo stained dollar floats to the floor**
by Senor Musk March 29, 2007

Putting your hands down a female's pants upon meeting her, as opposed to the normal method of handshaking.
Juan Manuel Ecuadorian Handshaked that girl and now she hates him forever. AWW DUUUDDEE AWWWWWWW
Ecuadorian Handshake does not a friend make!
Ecuadorian Handshake does not a friend make!
by Jordandijinz0rz November 5, 2009
