I'm glad someone else's mother always told her to wear clean underwear! At least there's two of us out there. I was also always told that you should never do anything you would't want to tell your mother about. And ... you never know who's around who is going to tell your mother they saw you ____ (fill in the blank: with that bad boy, not where you were supposed to be, doing a bad thing). Kept me on the straight and narrow.
Funniest thing is hearing myself use those sames words on my boys (ages 9 and 10)!