look up any word, like eiffel tower:
An exclamation. (Made famous by a Vine video in which Terrio shows off his dance moves.) can be used in almost any situation that requires an exclamation.
"Hey Josh grandma just made cookies!"
Josh: "Oh kill Em!"

(Your team just made a big play)
"Look at him go, Touchdown! Oh Kill Em!"
by noahconstrictor January 22, 2014