This butt plug is anything but a lazy bottom! Anytime you move, the weighted ball inside the B BALL UNO bounces, rolls, and rumbles in response! Get more from the motions of partner sex, with a plug that gives you powerful feedback with every thrust. Wear it during vaginal sex for an extra feeling of fullness: its round shape will angle your partner (or favorite dildo!) into your G-spot and maybe even let your partner in on the B BALL UNO's unique sensation!