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When you and another person share the side effects of a given drug. I.E. Are you and your friend are both angry drunks? Then you're fx twins!
Jack: bro, everytime I smoke my left arm falls asleep.

John: yo we're fx twins, the same shit happens to me smh!
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by Tony Left March 03, 2016
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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