When a man urinates and the urine comes out in two separate streams.
Guy #1: "Dude, I totally just pulled a Keern in your bathroom."
Guy #2: "Well, go clean it up then!"
Uhm nathan is a dweeb who likes batman stays up late and will TRY AND POKE YOUR EYE OUT WITH HIS PEN. Shame
Nathan ó keern is a dweeb