Which are you

The glass is twice at big as it needs to be

The glass is at 50% capacity.

I'm still waiting for my cheeseburger.

I'm a pissimist. The glass is full, of piss.

I would fall between the third and fourth types. I would definitely spend far too much time trying to decide wether the glass was half empty or half full before realizing an hour and a half later that I had, in fact, ordered a cheeseburger which had never arrived and now the kitchen is closed.

Don't forget the pedant. No matter which one you choose, they will "correct" your choice for you.

There's also: the glass is half empty and the other half sucks!

What about the more modern, "you guys have a glass?" Maybe that's cheeseburger person.

I definitely ordered the cheeseburger but got half a glass of water instead.

Fifth type: "well it depends, full of what?"

Sixth type: just drinks the water

"ah fuck i left another glass of water sitting out again"