This reminds of stories some caretakers of people with Down syndrome told me.
They host special dance, art and sports courses and have to make sure all the time that the participants don't get too touchy with each other.
People with Down syndrome appearantly often have no concept of what is a sexual activity and what is publicly appropriate, yet they have natural sexual urges. So if they start touching each other and it feels good, they soon start licking, dry humping, etc. all the way to climax.