Why is it...
That whenever I have a dentist appointment coming up, I brush my teeth about 50 times more than I usually do, thinking that all this concentrated dental care will make up for my lack of it the past year? Maybe, just maybe, I'll fool them tomorrow.
Do I floss? Why, yes, yes Miss Dental Assistant, I have been flossing, can't you tell?
Oh, of course sir, it looks like you've been doing it for at least 3 years!
P.S. That will totally not happen tomorrow.