When you stick an ice cube up a girls ass then fuck her as hard as you can
"wow im still so sore from last night" said sarina
"why what happened?" asked layla
"mike gave me a siberian sledge hammer"
by scizzott October 23, 2007
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1. The signature sketch of prop comic Gallagher, in which he smashes miscellaneous items with a large mallet not an actual sledgehammer. Apparently, a sledgehammer is too heterosexual. 2. A potent strain of methamphetamine, named after the above prop comic. Originating from around Hazleton, Pennsylvania. Taken orally, intravenously, anally, vaginally, nasally and smoked. The original lab was raided at the dawn of 2010, but is back in operation.
1. douche bag: I brought the clear plastic tarp for Gallagher's show. Hope he brings the Gallagher Sledge-O-Matic. Hee hee hee.

2. hazletard: I need a quarter hit of some Gallagher Sledge-O-Matic, bad. So I can suck truck driver cock for enough cash for a full hit, no homo.
by Hazletard-in-Chief December 09, 2010
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When you gape an asshole and as shit starts to come out you fuck her in the ass.
The bed was covered in what looked like ground beef after I fucked her ass while she shit. Classic primal ground beef sledge.
by Wallacé December 04, 2016
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another word to represent a female; often used to describe a female you do not like
sista sledge tried to come up to me and start some mess
by Shant' April 04, 2009
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The uncommon sexual act where the male claims he is about to ejaculate upon ones' face, but instead slams them in the face with their sturdy, hard schlong with enough force to leave a bruise.
"At a unanimous vote of 11-4, I hereby find you guilty of 1st degree murder of a young girl caused by blunt force trauma, as a result of this, so called, 'Sledge Hammer surprise'."
by GoodOldNO_NAME August 25, 2017
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