Mr. Peanut is the advertising logo and mascot of Planters, an American snack-food company and division of Kraft Foods. He is depicted as an anthropomorphic peanut in its shell dressed in the formal clothing of an old-fashioned gentleman: a top hat, monocle, white gloves, spats, and a cane.

Peter sets up a cutaway in "The Book of Joe" to prove himself a good judge of talent, having "discovered" Mr. Peanut.

Mr. Peanut objects to the audience when Lois uses his brand of peanuts to poison Lisa in "Customer of the Week".

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