So It's a Cultural Thing?

One day, a few years ago, I was talking to my mom about something that had to do with housekeeping, I can't remember exactly what it was. She made the comment, "We're Swedish, we only change our sheets twice a year." (Her dad is a full-blooded Swede.)

Ok, so let's get this straight: My mom is only half Swedish, so she would only be able to get away with changing the sheets four times a year. I, on the other hand, am just a quarter Swedish, so do you think I could get away with changing them only eight times a year?

That's less than once a month.

(Yeah, I don't think so either.)