Top Definition
Last name given to one who is dreadfully Irish. Normally redheaded, very attractive, and inclined to drinking as often as possible!
Hide the beer, McGaha is here!
by MelSmel February 12, 2009
1. a tubby ewok looking merf from alabama who doesn't shut up
Jesus! Quit being such a Mcgaha, BENNY!
by marinemeatball November 30, 2004
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