I've wanted to be a cop since I was about 5. Family thing....they always have some reason or another to stop and ask you questions...it may not seem reasonable to you, but everyone has their own reasons. I was stopped one night for swerving (It was to miss a dog.) but the cop "didn't see any dog". I was given a breathalizer test and everything. I passed, but it was reasonable IMO, I didn't like it, but it was valid. Not 10 mins later at a gas station I was questioned because I was talking to a guy I went to HS with...we played football together, but he had since become a known drug dealer so that I could understand.