"Casey Jones don't die that easy," and he will prove it the moment he gets his legs back under him. He has to grab the counter but his legs aren't quite shaky enough that he can't start the process.

"Who do you think you are, anyway?" Well, clearly he's a ninja. Casey knows from ninjas, and he knows a bad ninja when he sees it.

Or when it runs up and punches him in the gut for no good reason.