A fascinating blog from a UK Judge. Would be great to have the same here.
A great extract:
If you are driving along while using your mobile phone, and if a policeman (who is passing by in his car) calls to you to stop using the phone, do not, repeat not, shout back to the officer telling him to fuck off. When he advises you to moderate your language, avoid repeating the original response, and telling him that he is a useless wanker.
The above advice becomes even more important when you consider that there is a stash of cannabis in your pocket.
Ignore the above, and you may expect a fine for the phone, a fine for the bad language, and a fine for the cannabis.
There is no specific offence of being stupid, but if there were, we would see it committed every day.