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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