Peanut Butter Blumpkin Share definition Flag When a girl dips your penis in a jar of peanut butter and then proceeds to give you a bumpkin. "Dude, I got the most splendiferous peanut butter blumpkin from that chic Brenna last night!" Peanut Butter Blumpkin by Articuno69 November 25, 2013 0 0 Get merch Get the Peanut Butter Blumpkin mug. Buy Now — $32.95 See more merch