Rocks-Off Butt-Boy (Black)Plug and play with the combined butt plug and perineum massager; Rocks-Off Butt-Boy. Sit or stand, the stimulation is hands free! This unique product is made in soft, flexible, body safe silicone. Turn the RO-80MM (bullet) on for deep powerful vibrations. Are you a Butt-Boy?Silicone. Waterproof. Phthalates Free. Batteries Included.