ELI5: Explain Like I'm 5

Somnophilia

Okay kiddo, some adults like to be sexual when they are asleep or when other people are sleeping. This is called somnophilia. It's important to know that this is not okay unless both people involved are very clear and okay with it. Just like how we always have to ask for hugs or touch only with permission. It's okay to have different ways of feeling pleasant, but we always have to make sure everyone involved is comfortable and has given permission.