My DH is the BIL @FirstFallopians speaks of in her OP. Anyone thinking that this thread is a sexist dig at the families of sons need not worry- MIL came out with, “well I’m sure they think we’re weird”, in response to DH telling her, aghast, at one of the hundred things my parents do that baffles him. So it’s not just women who notice!
MIL is lovely and has v good boundaries. However there are some things I’m just like “wtf”. No. 1 is the refusal to load the dishwasher as you finish with an item. Instead, all of the dishes from the day must be sat (scraped, to be fair) on the counter immediately atop the dishwasher, then you load it all in one go after dinner. She can do what she likes in her own spacious house, but our kitchen is small. When she and BIL stay I resent 25% of my food preparation space being used for the storage of dirty dishes. It drives me mad. When I try to clear it Sod’s Law twenty minutes later she or BIL will go, “oh, where is my cup/glass”, which was somehow distinct from the other twenty dirty items left out and intended for reuse. DH defended this for years but admitted at this year’s Xmas visit that it’s very annoying.
When FIL was alive he had a firm timetable of morning coffee, lunch, afternoon coffee and dinner. Dinner was always at 19:30. Always. There would be a great deal of consternation if plans were made which meant dinner would have to be earlier. Even when staying at our house (as guests, when most people would normally go with the flow with the hosts) he would be put out if dinner wasn’t at half seven. He’s sadly passed away and MIL has got more relaxed and will just arrange it according to the plans we have for the day. Thank god she has because we now have two young kids who are practically feral if we don’t feed them by 6pm.
Lovely FIL also had house trousers, jobs trousers, DIY trousers and going out trousers. Any normal day may involve up to four trouser changes. We would be staying at their house and we’d all prepare to head out as planned; as the rest of us were getting shoes on he would say, “Hold on while I change my trousers”, having known when he got dressed for the day that we were going somewhere.
I know my day will come when our DCs have friends and partners calling to the house and sometimes wonder what we’ll get called weird for!