I didn't know what to do...

I was driving home yesterday and saw some chick TOTALLY picking her nose while she was driving. I yelled "Gross!" and pointed at her but I don't think that was enough. Obviously, I wanted to ram her car and point, but that would have been reckless. However, I feel that my yelling and pointing was an underwhelming response to the situation. I feel there has to be something else I could have done...