I agree with Arlos. This is a sign to GTFO.
Most cops are good people. As with everything, it still depends on the individual. I've found small town cops to be far nicer and more polite than big city ones. Baltimore and Dallas cops probably due to the nature of their jobs weren't the most pleasant to deal with. The ones where I am in now are great.
If the same two cops are there every week, it might be a good idea to chat with them and become friends. I know if I was a copy and I saw a Harrison on a bike, I'd pull his ass over and have some fun, too. It's just human nature, dude. Generally it's a good idea to be polite and friendly to anyone who cooks your food or can arrest you.