My DH has steadfastly, stubbornly, refused to put the toilet seat down all our married life. The seat needed replacing recently and I bought one when I was at a local store. DH fitted it and found, to his dismay and my secret delight, that it wouldn't stay up. In fact the poor man had to hold the ruddy seat up while he was peeing, haha.
Unfortunately (for me) he removed it and re-fitted it so that it does stay up. It looks flipping ridiculous, because it has had to be placed very far forward on the toilet bowl, but he doesn't care. It stays up so he's happy. Grrr