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Acting drunk despite being sober due to the fact that your friends have been drinking, usually dancing/singing along to music that you dislike etc.

Comes with the unfortunate side effect of being able to remember the events the following morning.
Dude, why were you dancing last night, I thought you hated that music" "Yeah, normally I do, but I was drunk by proxy. I did some pretty embarrassing stuff
by Darkara42 June 02, 2010