Yop, thats what I meant. With an grown up husband, I dont expect, to look everywhere, if he left something as its not supposed to be. And as the word toilette seat mentions, its supposed to be used while sitting. Thats what its designed for. That I need to look behind a child, if it lefts everything propperly is normal. But an adult, unable to use a toilette seat = use it and leave it as it was before, just as everything else in the house, so that noone else needs to go behind you and care that you leave everything the way it was, may it be kitchen, bath, toilette, ... is nothing that you expect from grown up people. You could as well say, that I need to expect, that you leave a mess in the kitchen, and that there could be something slippery on the floor, because of me needing to be aware, that men should be totally stupid, and so unknowing, that they would not know, that if you loose something slippery on the kitchen floor, that you clean that up, before leaving the kitchen.
But I dont think of men being that stupid. I relie on them, being totally able to use their brain as every other human being on earth and so not leaving the kitchen, when having lost something slippery on the floor, without cleaning that. You simply leave rooms, as you find them. Easy rule.