It's a family event imagine you've got younger cousins or children about. Imagine they're playing hide and seek because they're bored and they stumble into your room where you're doing the dirty?! Hell Imagine anyone's playing hide and seek and finds you. I wouldn't even knock on a door which is closed, I'd just open it not expecting anyone to be in there... because why would they?! Lack of self-control means this was a total deserved FU.