I was about to comment on that fact that Philharmonicas are squares because they're a rip off of regular harmonicas, but those thingies (I think that's the technical term for them) sticking out at the bottom where the ball end of the strings go kinda remind me of those crazy spikey black metal wrist accessories, which would make your cello = metal \m/m/m\ and not the property of a square.
But then again, everyone knows black metal garb is for losers. (oooh)
Aw heck who am I kidding, I'm just a Jealous Jeffery.