Hash

The hash... like hashtag and stuff.

Or maybe pound? (Which makes no sense since that's a £ not #)

Number sign?

Nope.

There is no known use before Bell Labs invents this thing. They called it the octothorpe. Everything else is fiction!

And it's as old as I am. At least that's when the patent was filed for it.

I just get a kick of out being as old as this symbol. I realize it's stupid... but I like it none-the-less