Hey, c'mon. You're a great dad. Teach them that they're adult words, and that it's the meaning behind them that really matters. Without that meaning, they're worthless. Words are words, Buck, and a young kid repeating her daddy really isn't the end of the world and it definitely doesn't make you a bad dad. You don't swear at them, you don't use really nasty slang. I think you're still doing okay.