Definition: Unsonsy is a slang term that refers to an inappropriate or offensive sexual behavior. It involves using words, phrases, or actions that are considered inappropriate and sexually explicit for adults, but not appropriate for children. The term was popularized by the 1950s TV show "The Love Boat," where the characters used unsonsy in their conversations with each other. Today, it is often used to describe any behavior that goes beyond what is considered appropriate or acceptable in a mature context