Literally.
My youngest had been out with his dad at a Beekeeper's Club meeting and got home just before 9pm. Older bro was already in bed. In bed, but not asleep.
Younger bro walked into their shared bathroom to get ready for bed and closed the door. Seconds later...
BOOM!
I come racing out of the kitchen and yell up the stairs. "Jordan? What WAS that??"
