Who said "Stop that, you're all covered in dirt!"?

This quote is attributed to Zoidberg.

Stop that, you're all covered in dirt! - Zoidberg

"Stop that, you're all covered in dirt!"

Zoidberg Nature

"Why must I be a monster?"

"I've gone back in time to when dinosaurs weren't extinct."

"Wha-? Oh, is the cute doctor asking me out?"

"Your music is bad, and you should feel bad."

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."