Yesterday afternoon, I got a text from my ex-wife. She said that Middle Son keeps taking his clothes off and it was driving her crazy. She wanted to know what he does at my house. I texted back that I let him be naked in his room and the bathroom, and occasionally he runs from his room to the bathroom naked. She said that that was what he is doing at her house.
But he's going from his bedroom to the bathroom at the other end of the house, instead of the bathroom next to his room. So he's running naked the entire length of the house.
Middle Son has a knack for finding the loopholes.