potty mouth

Apparently C used some choice words while at a friends house this week. J has been working on their basement and my friend has been watching her while he is doing this and I am at school. Kind of embarrassing, but I guess it happens to the best of us - right Nana? She had a talking to and I don't think she will be using words like that again. Question is: Who did she learn them from? Feel free to post your ideas.