My ds (17) has faked my signature to get out of pe at school (twice). It is the sort of thing a lot of us probably did as kids but should I just have the "this is not ok" conversation or take some sort of action as a consequence. One half of me says let it go, it is fairly normal behaviour, the other half says there needs to be some consequence for fraudulent behaviour. Just as background information: ds has been difficult of late - verbally abusive, ignoring basic manners, non-cooperation.