Woman lays down on a couch and puts her legs over the mans shoulders. Man rests his feet on the end of the couch and "pelvic thrusts" into the woman.

Warning! Results may include; ulta-orgasm, broken back, and/or broken penis.
I had to go to the hospital last night.
Why?
I had to take my girl there cuz I may have broken her back doing the Sledgehammer.
by tbsveryfunny July 11, 2010
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A half handjob, half bagtag. Usually performed under hammed circumstances when the woman's decision making is poor. Unfortunatly, when told to go faster the woman speeds up and smashes your nuts to peices. Also known as the HJ(handjob) Hodge.
"Man, she was giving me a handjob last night but her dumbass friend told her to go faster, and it turned into a sledgehammer."
by Canuck19 January 21, 2007
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Jim Ross: Bah Gawd, Triple H nearly took his HEAD off with that damn Sledgehammer... what a slobber knocker!
by sadfsfgsdfgefg November 09, 2007
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Worlds fastest Corvette manufactured by Callaway.
Most expensive corvette produced for it's time
$400,000.00.
Sledgehammer
1/4 Mile= 10.6 secs @ 127mph
top speed= 254mph
0-60 time 3.9sec
by James Adamcheck September 16, 2006
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A fart smelling soooooooo damn bad that the person's head instantly recoils back. Most of the time, this fart is silent.
Bruce: *toot*

Claire: *SWINGGGG* EWWWWWWW *coughs*

Greg: EVACUATE, IT'S A SLEDGEHAMMER!!

Bruce: *whistles*
by Ni_Mader_JiJi_Bao_Zhe June 16, 2010
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When she gets on her knees to blow you, and you pick up your erect cock by the tip and let it slam on her face like a sledgehammer.
You wanna get sledgehammered stephyane you little slut?
by SorryBandit December 14, 2019
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A person who tricks another person in to thinking they are romantically interested, only to ignore them later on.
"She stopped answering his calls, that girl is a sledgehammer."
by js2011 October 05, 2011
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