No. I have NEVER used 'The Bird ' EVER in my life, but there are certainly plenty of people who do !!! I don't like it when they are clearly in the wrong, but still give me ' The Bird '. I think some people need to re read their drivers manual. If I am in the wrong, I will wear it, and would happily own up to it, but I would never use my finger in that way. I think it is vile, and people show the type of person they really are when they do it. I will honk my horn to express my displeasure and warn people, but that's about it. It's not good to provoke others, as one day you will provoke the wrong person, and who knows what kind of violence could erupt from that.
No I have never flipped the bird while driving. There are always inconsiderate drivers on the road, drivers who don't know how to merge and/or don't follow the road rules, but I do my best to maintain a calm state as road rage is not going to get you anywhere and you need to keep your own concentration on the road.
No, not as I'm driving, because I don't drive, only as a passenger if they annoy my usually patient husband! He just blasts his h o r n, if he has too!