A pharmacist.

And, while you're imagining what it would be like to be a ninja, do your thoughts ever wander? Like how you'd be such a great ninja that you'd go places undetected...like the movie theatre. Yeah...I wonder if I could ninja myself onto a plane and travel the world? I'd backpack around Europe. I wonder if I'd meet other ninja stow-aways...only if they weren't very good ninjas. Yeah, if they were as good of ninjas as I was, they'd be undetected. Hey! What if there are a bunch more ninjas than we can imagine because the best ones are so good, they've never been detected? Yeah! What if most ninjas aren't the stereotypical television ninjas, but we don't know it because we've never seen a GOOD ninja because of the very nature of a GOOD ninja? What if every country has ninjas, but we only know about the Japanese ones because they're rubbish? Shower thoughts.