That hasn't happened yet.
I'm a boarding school girl. For some reasons, my friend and I had to move to a "forgotten" room. Forgotten because it hasn't been used for a few years and everyone forgets about its existence and, consequently, forgets about us. I have to mention that my bed is behind the wall and you can't see it from the door, and I never speak to the teacher when he enters the room in the evening to avoid unnecessary conversations (this is key information to understand the whole situation).
The event I want to describe took place tonight. The tutor came to us very late (he forgot, as always). As soon as he entered our room, his friend immediately sat on the bed. She was not aware of what she was doing, she did it automatically (she happens to sleepwalk