When I was a kid, my mum used to suggest that I go and brush my teeth before we went to the dentist.
I used to think that this was cheating, so I didn't do it.
I figured that if I never brushed my teeth, then doing it just before I went to the dentist was just the same a lying.
So, I used to turn up having not brushed my teeth for weeks.
Hey! At least I'm honest!