You walk into the house ahead of your husband and son and unconsciously lock the door. And go to a part of the house where you can’t hear the phone ringing (i.e. your husband and son are calling to ask you to unlock it). And then 10 minutes later, you wander through the house and wonder where they hell they are, only to open the door and find them hanging out on the front porch in 103 degree heat. Whoops.