Here’s a handy article about how police officers would like you to behave if you’re pulled over. My dad had told me a long time ago to always let the office know what you were about to do before you do it. That’s in here, and so are a number of others.
They forgot to mention unbuttoning your shirt.
I don’t think I’ve got the guts to try that one.
It totally works! Also, be sure to offer the officer a beer from your six pack.