Locked out of the house

Yesterday I got locked out of the house while bringing groceries in from the car by my mischevious 4 year old. He turned the deadbolt, so even with a key I was out of luck while he stood there giggling. Matt was outside as well, so I'm glad he decided to open it again for us (after several minutes of knocking, pleading, and finally threatening). What will they think of next?