PB and Wank Share definition Flag When someone carefully inserts their yardstick penis into a jar of Peanut Butter and begins to hump it back and forth. "When I get home, Im gonna do a good PB and Wank" PB and Wank by connorsimpson May 24, 2017 0 0 Get merch Get the PB and Wank mug. Buy Now — $32.95 See more merch