Whilst on the subject of bathroom habits, I had someone tell me that the fly is not supposed to be used by men when urinating. The "proper" way to do it is to undo the belt and buttons, rather than just opening the fly and letting fly. First I've heard of it.
I love when people say things like this.
I suspect they actually believe there is some rule book out there that lists all the "dos and don'ts" about all clothing usage.
Or maybe the "inventor of trousers" left specific instructions.
Or maybe there is a passage about pants in Leviticus or something.