right now it would be 'how to raise dogs and urchin's and preventing urchin's from using the new found button to wind mummy up which is the word FUCK' 
If my daughter had learned that word when she was the urchin's age, she would have said it a million times, so I was careful not to let her hear it. I don't know how I would have dealt with it at that age. Now, she feels like I lied to her by not teaching her what the curse words are, so I have been letting her hear a few. So far, she hasn't repeated them.
Which ones are the few you've let her hear?
The first one, which was accidental because I didn't realize it would be in the movie, was the word ass in Meet the Fockers. Ben Stiller's character slipped and said the word ass in front of his infant nephew and then the baby repeated it. Stiller generated lots of laughs trying to get the baby not to say it.
I knew I couldn't make her unhear the word, so I decided to use it as a test case. I explained to her that ass used in that way is a curse word. Adults know words like this but mature adults don't repeat them, especially not in front of children, because they might hurt someone's feelings. I gave her appropriate words to use for that part of the anatomy instead as well as the appropriate usage of the word ass to mean a donkey.
She promised not to repeat it and she hasn't.
Later, she wanted to watch The King's Speech with us. I knew that it had some curse words in it although I didn't realize how many since I hadn't seen it myself yet and I was a little nervous. She pointed out that she hadn't used the curse word we had talked about. So I told her that if she promised not to use the curse words, then she could see the movie with us. So she heard all those curse words and hasn't used any of them, so far. I didn't elaborate on every single curse word in the movie the way I did for ass, but just said that the speech therapist realized that the King didn't stutter when he used curse words, so that's why he had him say them.
Bodaccea, I found this website which might help you with the urchin:
http://childdevelopmentinfo.com/parenting/kids-swearing-cursing.shtml
