I left my bp's enclosure open (he was asleep, or so I thought) while I was in the room changing his water, and when my parents called me away for something I of course forgot to close it. Less than 10 minutes later I heard something fall to the floor with a loud BANG and ran to my room...to find a book on the floor beneath the shelves it was placed on and my bp slithering his way to the ceiling, up the shelves! Was just glad he didn't manage to hurt himself. My bad!