More to the point, is it considered impolite to not make the bed?

It is considered impolite to ask for a tour of the host's home.

Whispering in the presence of other people is considered impolite.

Sitting down or just getting along with one's things at another's house is considered highly impolite.

It is considered impolite to go to someone's house without a gift.

A person who knew it was considered impolite to end a personal letter on the first page.

In fact, it is considered impolite if one does not give another enough time to consider his words before speaking.

"May I make a request that might be considered impolite?"

When invited, it is consider impolite not to bring a present.

It would be considered impolite for a visitor not to eat.