So named for its resemblance to the familiar hand based greeting. This pleasure technique requires the female to be in a doggy style position as four fingers and as much of your hand are inserted into the vagina. Assuming the female has not gorged herself on Tommy's Burger, the thumb can be safely used to penetrate the anus without fear of mudslides. Also referred to as "four in the slit, one in the shit".
If you got deals to make, seal them with a dirty handshake.
by Autistic Pornstar February 5, 2010
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The act of jizzing, or ejaculating, into your palm and slapping someone across the face. Can be done either in front of them or premeditated. You don't necessarily have to dislike a person to do such gesture. Most times it is an act of desperation to get the attention of another female or male or coworker.
DIRTY HANDSHAKER- "Hey baby! Baby? Sweety?" *smack*

VICTIM-"Wtf!!!? What?"

DIRTY HANDSHAKER- "I love you!" :)

VICTIM- "I know" :)

or

DIRTY HANDSHAKER- "Hey Frank! Yeah you!" *smack*

VICTIM-"Wtf!!!? Why'd you do that?"

DIRTY HANDSHAKER- "Cuz you're my boy!" :)

VICTIM- "I know" :)
by mateodos September 4, 2009
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