I think it's safe to say that people that have shit dangling from their rear mirror are bad and unimaginative drivers that don't get the importance of a working

I think it's safe to say that people that have shit dangling from their rear mirror are bad and unimaginative drivers that don't get the importance of a working peripheral vision. And there is research that shows that they have more accidents. (Actually people that 'personalize' their cars, which includes funny signs and other gadgets)