I have had a policeman so hell bent on finding something wrong that he could report me for or generally give me a lecture about that he actually reached into his pocket and produced a £1.99 pencil type tyre guage. He went on to check my tyre pressures and proceeded to ask me what I thought the pressures should read.
I casually asked him for a pen and paper and a little time to try and work out a reasonable estimate as the tyres were hot and pressures normally set when cold and he almost hit me. He stopped himself and chose instead to start prodding me in the face with his pencil telling me that *I* had an attitude problem.
I'm just glad that most coppers are generally an alright bunch and this type of bully boy on a power trip behaviour is now very rare.