Using a cum strapon or a squirting strap on can be an incredibly pleasurable experience for both partners in a sexual encounter. A cum strapon is a type of strap on that can cum. It's a trap-on dildo that ejaculates, similar to a regular strap-on dildo but with the added ability to mimic the experience of a real penis and ejaculate. It works by filling with artificial cum lube or other fluid and releasing it when desired. They come in many sizes, colours and shapes.