Who said "My underwear is reading a book?"?

This quote is attributed to Ralph Wiggum.

My underwear is reading a book? - Ralph Wiggum

"My underwear is reading a book?"

Ralph Wiggum Imagination

"I'm in danger."

"Me fail English? That's unpossible."

"Eat my shorts."

"Ay caramba!"

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."