When I was 15 my little sister (12) use to dry humped me while I was laying on the floor on the laptop. I asked her what she was doing ( at the time I didn't know she was dry humping me or that her actions were pleasurable). All she told me is that she wanted to play hoursy. I really didn't car about it until she started doing it more often. I finally stopped the hoursy thing because it was annoying has hell. Now that I'm 17 I finally realized why she was doing it.