When someone (friend, stranger, homeless person, whoever) is either unconscious or deceased and you grab their hand, wrap their fingers around your erect penis and manipulate their elbow into moving their arm to jerk you off.
“Yo, my buddy was passed out in basically a diabetic coma, so before I called 911 I used him to give me a dead man’s hand Dutch rudder. I even finished right before the paramedics got there. I told them the jizz on his face was just frosting from all the Cinnabon and sodies he ate. They bought it!”
The strange dance popularized by Donald Trump when he was running for president the second time, simulating masturbating two other males, one on the left of him and the other to the right.
I was out with my gay friends in south beach and couldn't believe there was a guy doing the two handed man mambo!
In card games (ex. Poker, Uno, etc.), The Hand Man is the person who assumes he's got the best winning cards in his hand.
In business, The Hand Man or more commonly known as the Right-Hand Man, is a very important assistant who helps someone do a job.
Example 1, Card Games:
John: " Aw c'mon, my hand is so bad. Well I'm screwed."
Elliot: " Mine is manageable, I wonder who's The Hand Man."
Sarah: " This is an interesting hand..."
Amy: " You guys are so dead, I'm The Hand Man."
Example 2, Business:
Secretary John Wilkins' is The Hand Man of Vice President Elizabeth Fischbach.
When being blue balled by a girl, any man can utilize dead man’s hand. Wait for the girl to sleep and gently put her hand on your phallus whilst you fantasize about her jerking you off.
Chad: “So Brad, did you get lucky with Jessica last night?
Brad: “Nah dude, she blue balled me. I used the dead man’s hand though, so eventually she made me jizz.”
Chad: “Awesome”