Let Me See You Rock That Body Does Anyone Know What The Name Of The Scooter Is That You Sit On And Rock Your Body Side To Side To Make It Go?

Does anyone know what the name of the scooter is that you sit on and rock your body side to side to make it go? - let me see you rock that body

Missed my daughter and I tried to find one, but do not even know what he wants. They sit there and move your body or your legs from side to side, so to speak. If anyone knows how they can be called, you know me? I tried to keep the balance. Any other suggestions? Thank you!