Suction-cup dildos are just what they look like: dildos with suction cup at the end. It can then be glued to walls, tub sides, headboards, floors—just about any smooth surface. There are many options; large, small, lifelike, vibrating, and waterproof. You can find it in the suction cup model if you need it. So, if you find any of these appealing and are considering buying a sucker toy, read on to learn about the various sexy and fun ways you can use your new toy.