Now, what did you first think of when you saw this picture? Tell me you thought the same thing!
Harry sat up and gasped; the glass front of the boa constrictor's tank had vanished. The great snake was uncoiling itself rapidly, slithering out onto the floor. People throughout the reptile exhibit house screamed and started running for the exits.
Harry Potter and the Sorcerer's Stone Chapter two: The Vanishing Glass