Irish Dagger
A lethal weapon crafted by smashing one end of a beer bottle to be used as a stabbing weapon presumably in a barfight
Steve: did you hear about that guy who died in a barfight the other night?
Jim: No what happened
Steve: Some guy got him in the throat with a good ol' Irish Dagger
Jim: No what happened
Steve: Some guy got him in the throat with a good ol' Irish Dagger