Mickey FinnMickey Finn
Origin of Mickey Finn; from uncertain or unknown; perhaps
Origin of Mickey FinnProbably after a notorious Chicago bar shut down in 1903, allegedly because its customers were served spiked drinks and then robbed.
(plural Mickey Finns)
Probably named for the manager and bartender of a Chicago establishment, the Lone Star Saloon and Palm Garden Restaurant, which operated from 1896 to 1903, who was accused of using "knockout drops" to incapacitate and rob some of his customers.