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Blain's signature mini gun from the classic sci/fi action movie Predator (1987). This can also refer to other memorable, badass weapons in movies and video games.
Blain - (Jesse Ventura): "Come on in you fuckers, Ol' Painless is waiting."


guy 1: "Dude! you got a triple kill with that Spartan Laser!"

guy 2: "Just letting Ol' Painless do its thing."


guy 1: "Remember when Stallone totally dominated at the end of Rambo with that .50 cal?"

guy 2: "oh yeah, he had his way with Ol' Painless."
by EastClintwood89 February 21, 2011
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