A double dildo is a sex toy with two penis-shaped ends rather than just one, as in a regular dildo. This type of toy is most often used to penetrate two different people at the same time, but a woman may also use it for simultaneous anal and vaginal penetration. Double dildos are longer than traditional dildos, and they may be made of a number of different materials, including silicone, latex, and even glass. Many of the ones made of more flexible materials are designed to bend for solo use.
A double dildo may also be called a double penetration dildo or a double dong.