Is it true love if you have to clench your teeth?
Yupper.
Ever have the urge to say something not Christ-like when your child tells you a bold faced lie?
I'm talking a teenager, telling a very, very bad one.
After you have a few seconds to clinch your teeth and remember how foul you were to your own parents, you can then say, "I love you. Now go to your room. You're ground ed for 3 days."
I think that's much better than yelling or even whispering words that you cannot unwhisper....