He's a programmer of course Number (0 == valid)

I'm not exactly sure what that's supposed to mean, OP. Was he just making a joke?

I don't get it. :^{

First the worst, zero the hero.

Well if you're in tech, 0 indicates the first item of a list, or the validity of something. Take it as a compliment

That's when you put on a smile, shake his hand, and say "or you can call me :::name:::" make your boss look like an asshole.

So which are you? False value, first item of a data structure, or the indicator of a successful fuction call?

What are you complaining about OP? If number two is better than number three, number one is better than number two, then obviously number zero is better than number one. It's simple extrapolation! You are officially better than the number one employee. Congratulations!

You know who else was employee #0? Steve Jobs.

Zero is the hero.. First is the worst ring any bells?