Hammett Glass Key 457: ‘Bernie Despain blew town last night with my winnings on Peggy O’Toole’ [. . . .] ‘I’ve got to get this guy’ [. . . .] ‘[W]hen I think I’ve worn out the jinx, this guy takes a Mickey Finn on me. I can’t stand for it.at take a Mickey Finn (v.) under mickey finn, n.