What a Mouth!

What a mouth, Josie has on her now! It's sounds different when it is coming from other children's mouths or from kids that are older. But what do you do with a Two Year Old that calls things "Stupid", constantly says "Butt Crack" and is now saying "Oh God!"
Then to top it off, tonight I was having her go pee before bed and she tells me "You're an idiot!" Come on girl!!! You're too young to be saying this stuff. I've tried the ignoring thing and the getting on to her and telling her she can't say that stuff. But it all just keeps flying out of her mouth!
I guess at least she's not cussing me, Yet that is!!! :-)