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1.
A very masculine handshake, using a lumberjack-strength squeeze and a swift, firm up and down pumping action.
My goodness Gerald, you have just crushed the bones in my hand to the point where I'll never be able to use it again. Now that's a manshake!
by Gerald Nieboer October 13, 2007
 
2.
The term used when someone give a strong handshake. Also known as thundergrip.
Thats a real man shake
by alexmojo2 May 09, 2007
 
3.
The ultra bro act where two guys hook up with girls and while making out do a secret handshake behind said girls backs.
Doug Willis, "Dude that Manshake was sick last night Eric."
by NiggaBlumpkins April 14, 2009
 
4.
To shake the drops off after urinating in one single shake.
Only real men can do this, although two shakes is acceptably manly in private. Three or more and you're masturbating, which is not a manly thing to be doing in private OR public.
Johnboy Walton:

Don't cry BillyJimBob, I know you loved Ellie May, but I could tell from MattBob's Manshake that he deserved her better. One shake was all it took, and I was watchin' his pants for a wet stain all mornin'.
by aaaaajon December 29, 2011
 
5.
A manly handshake given by a woman.
Even though she's pretty hot, she gave me a weird manshake.
by tommco May 04, 2011
 
6.
A form of manly competition between guys in which they try to crush each other's hands while shaking- a ladder can be used to determine rankings.
Dude, my hands are still bleeding from my manshake with Theo at lunch.
by SgtPepperz42 October 19, 2009
 
7.
(n.)An extremely firm handshake that leaves one feeling inferior and dominated.
Tommy introduced me to Hulk Hogan last year. Boy, did he have a manshake!
by esqueleto February 18, 2008