If your parents are coming for a visit and you haven't seen them for a while, should you clean the house?

I mean really. If I clean the house now, that means I don't want them to see the real me that I am now, right? If I am really so consumed with disorder, why didn't I clean up before I knew they were coming. Conversely, I could appear to simply be a slob by their standards thus inevertently lowering their opinion of me. I have three days to decide, so feel free to chime in any time. The clock is ticking... tick tock....