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Used when someone is trying to argue and they no longer make sense, as if they were drunk. Especially on the internet.
A combination of butthole and drunkard.

Also known as a cleaner, funnier way of saying 'drunken a**hole'
Fangirl: OMG I love (popular artist)
Jerk: That person is so flubbermunster watered spaggetti
Outsider: Dude, you are being such a drunkbutt.
by howaboutnot January 12, 2015
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