MickeyFinn

Mick·ey Finn (mĭkʹē fĭnʹ) n. Slang

An alcoholic beverage that is surreptitiously altered to induce diarrhea or stupefy, render unconscious, or otherwise incapacitate the person who drinks it.

  [Probably after a notorious Chicago bar shut down in 1903, allegedly because its customers were served spiked drinks and then robbed.]

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