House rules. All seats are put down.
That's a rule only in North America apparently, everywhere else the rule is to use your eyes and jut put the seat down or up depending on how you need it regardless of its position.
i'll try and respect house rules. nut what's worst ..pee on seat or seat left up
No, put the seat down.
I guess...even when one is half asleep and doesn't the turn a light on, in order to not disturb the party responsible for not putting the seat back down. Since everyone needs the seat down sometimes, it does seem like an easy courtesy to to extend.