Avery has long since understood that you should not say "oh my God". She will correct you - or the people on TV. It is unavoidable however that she's going to pick up choice words here or there. The first one was a while back when she said "dumbass". I'm very pleased to report she was not echoing me!
Last night we had a double-whammy. First she called Saffy a "brat". I told her that wasn't nice and she shouldn't call people that. She then said "I am a brat", so I asked where she got that from, who called her that. Turns out a classmate called her a brat. So we dealt with how to handle that and that it is unacceptable. Later in the evening she called Saffy another name, I don't remember what it was already (where is my memory going). So once again we had the "you don't call anyone names" conversation and I asked where she heard that. Yet again a classmate, but a different one.
I really wonder what gems she takes in to teach her friends.