What time do the cows come home?

I have never had a dentist look into my mouth during a checkup and exclaim: “Wow.  You’ve really been taking care of your teeth.” 

You can floss till the cows come home but the dentist always shakes his head with disappointment and asks, “Do you floss? I see a lot of plaque.”

It’s as if your teeth and the dentist have an understanding and your teeth grow special plaque for the visit.

As I’ve said before, dentists choose that profession to be legally aggressive.  When they scrape around, it sounds as if they are digging a new subway.  You would think by now there would be something better.

By the way, what time do the cows come home?  Probably around seven p.m., at dusk in the summer.  They stand around and eat all day and then amble home to sleep. 

What do you think?  Is it time to start home?