I kept hearing all this banging around, so I went upstairs. As usual, they are horsing around in the
bathroom. You know, that room where most accidents in the home occur?
So I appeared in the doorway and DS7 had that sudden guilty look. I asked, "What are you supposed to be doing?"
He said, "Brushing my teeth."
I informed him that they'd been crashing around in the bathroom for 15 minutes. "It doesn't take 15 minutes to brush your teeth, and it doesn't require any crashing around, either. Are you done brushing your teeth now?"
"Ummmm, no." And he breaks out the toothbrush and toothpaste.

He brushes like crazy. I put toothpaste on DS3's toothbrush and hand it to him, meanwhile noticing that his side of the counter is FULL of smeared toothpaste. That yucky-smelling fruity kind. So while they're brushing, I clean up DS3's sink.
They brush their teeth in record time, then I tell them to get out and get ready for bed. I pick up all the towels from the floor and hang them back up, then hear them starting to horse around in DH's office. I shout for DS7 to get to bed and leave DH to deal with the rest.