"What the------!" is huge with my 11 yr old right now. My 7 yr old daughter tried out one of her dad's words the other day and it did NOT fly. We've been trying to come up with alternatives that are not offensive. Our pastor gave a sermon on thinking of alternative, creative utterances to stand apart as Christians in our speech. Taking this to heart, my kids can now be heard calling each other, Pleabian, Yetti, or Worm Turd. Their favorite expletive when they are angry, for now, is, "Oh,Hamster Nipple!" This always results in the angry one giggling and not being angry much longer. (Somehow, I'm not convinced the pastor had quite envisioned such "creativity".)