Going on from a previous OP that said her ILs drive her insane with their narrow food choices, constant tea drinking and couch sitting .. what little harmless ways drive you mad ?
My father when I was younger and visiting with small DCs would come into the bedroom when he figured we had slept enough to squeegee and dry the windows of any condensation. Happened a lot as we often visited at Xmas time . Just because it was his habit every morning . Also wanted a dinner at 1pm despite us only getting around to brunch at 12. Would turn news on in middle of people talking . Hated anyone sitting in his chair .
But he redeemed himself as he was also a loving generous man and he and my mother would go shopping for nappies, wipes , food for our visits and pick up the tab for meals out .