Top Definition
when a short redhead uses a fat girls stomach as a trampoline, and he jumps up, does a backflip, and lands on his stomach with his doinker in her hoo-hah
Fred: Man, Patrick o'neil o'harris mckinley really gave susy the old irish sledgehammer last night?

George: yeah, and im pretty sure it found its way to youtube.
by buttbush August 07, 2009
5 Words related to irish sledgehammer

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