DD bites me (mainly when she's teething) and thinks it's hilarious when I react. I'm trying to show her it's wrong by saying "no" very firmly, putting her down and walking away/ignoring her (this wasn't so easy earlier when she was in the bath and nearly drew blood on my finger 
)
This approach doesn't seem to be working. I remember my mother biting me back and it worked - I never bit her again, but I've no idea how old I was. DD is only 14mo which I think is far too young to even consider that method.
Does anyone have any tips?