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1.
The Kind of Drunk You get after two or three $6 bottles of Vodka. Stumbling, Drooling, Sluring Drunker than TEN INDIANS DRUNK. Just Picture it, Also see TED KENNEDY
I was so fucking Bum Drunk Last night I think I Shat Myself, Does anyone remeber that Fat Sluts Name.
by DR. Know October 14, 2003
 
2.
The act of being wasted in so much as being likened to a bum. Origins: Las Vegas golf trip and Construction Trade Show 2008.
Dan-o passed out standing up waiting for the monorail rail in Vegas only to be discovered 2 hours later by friend who were just passing by, he was bum drunk!
by Dan-o Merz May 27, 2008