Younger Brother: Why do you keep staring at me like that?

Older Brother: I'm trying to develop my Hate-O-Vision powers.

Younger Brother: Is it working?

Older Brother: No, because you haven't begun ceasing to exist.

Younger Brother: Well, if you want, I could just walk over there and you could pretend like I don't exist.

Older Brother: Well, if you don't exist, I won't have to buy you lunch, anymore.

Younger Brother: Well then I'll just reexist at lunchtime.

Older Brother: You can't reexist. In fact, I'm pretty sure that's not even a word.

Younger Brother: Yes it is.

Older Brother: Nope, it doesn't exist.

Younger Brother: It does now, because I just reexisted it.

Older Brother: .... Good point. You win.