In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Suction cups
If you dream that someone is using suction cups on you, something good will happen when you didn’t expect it. If you use suction cups on someone, you will be relieved of your troubles.