I bet they knew how the horn worked. Something doesn't seem right.rbbm
I would think a pair of three year olds could open the door and pull if closed. Twins have a way of aiding and abetting each other, speaking as a mom of twins. With that said I would think they could get out as well. I wonder if they hit the automatic door locks and couldn't figure out how to unlock the door. I would want to know if they were found with the doors locked or unlocked.
IMO