how can you lock someone in a room?
You're in. You can't be locked inside. Just open the door and go. By the way, that is what happens unless I missed something. It reminds me of a joke or riddle or something I heard years ago. You are in a car and all the windows are up and the doors are locked. There is a brick on the seat beside you. How do you get out? The answer: Open the door and step out. You are INSIDE the car!!
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I did sixty in five minutes once...