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The sober person tasked with keeping a drunk person out of trouble and in general good health; will ideally keep their charge happy and prevent him or her from making any monumentally bad life choices.
"Nobody knows what I did after I ditched my drunk-keeper, but I woke up naked in my grandma's yard hugging a duck. Honestly I'm just glad to be alive."

"Megan was my drunk-keeper, thank god. I did eight shots of tequila and without her I would have walked into traffic, assaulted a cop, and sexted my second cousin."
by Vri May 12, 2010
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