Two showers for three people, so I decided instead of the kids having theirs and me mine, we’d change to 16yr old Jessie having her own bathroom all to herself and me & Tom sharing mine.
Well, mini-management ignored that ruling so we have Jess usually using my shower and Tom showering when whipped.
Which arrangement caused my drainage to block. Ha! Jess and her long hair blocking my shower, I thought, cleaning the hair off the grate. I mean, she’s a likely culprit:
Except it was GREY!
And I think I have tracked down the source: