While Tim was stuck in the Fifth Dimension…

Tim: What’s your name?

Mister Mxyzptlk: My name?

Tim: Uh-uh.

Mister Mxyzptlk:

Mxyzptlk.

Tim: Can you spell that please?

Mister Mxyzptlk: M-x-y-z-p-clay.

Tim: Did you say “clay”?

Mister Mxyzptlk: Yes. The “clay” is silent.