Yes there is!!
Wife came home home once when I had an SS Commodore, parked in the garage, jumped out, somehow locked it, dropped her bag inside, went back into the garage to find our 2 smiling boys, (both under 3) locked in the car while it was running.
Funny faces at the window kept them distracted for about 30 secs, and then it was scream time.
Try telling a screaming 3 year old to unlock the door!
Now THATS annoying :-)