A double penetration dildo or double dildo is a type of sex toy used for double penetration, the simultaneous entry of two bodily orifices at the same time, belonging to either one or two people. It is a dildo designed in the form of two penetrative stimulators (either penis-shaped or non-phallic) that are either separate or fixed on a single shaft. Some double penetration dildos include a vibrating motor that allows them to be used as double penetration vibrators.