Who said "Principal Skinner is an old man who smells like old man."?

This quote is attributed to Ralph Wiggum.

Principal Skinner is an old man who smells like old man. - Ralph Wiggum

"Principal Skinner is an old man who smells like old man."

Ralph Wiggum Humor

"I'm in danger."

"Me fail English? That's unpossible."

"Eat my shorts."

"Ay caramba!"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."