peanut butter slut Share definition Flag a person that is in love with peanut butter and is quite shameful about it Topher is such a peanut butter slut. He can hardly control himself when he is around skippy. peanut butter slut by SarahWeggeland April 16, 2017 0 0 Get merch Get the peanut butter slut mug. Buy Now — $32.95 See more merch