I don't really flick off people that much, unless for a humorous reason with my friends. For example, an annoying and strict professor will get flicked off if her back is turned, just to get a good laugh.

Can't remember when I started swearing. >.< It was probably pretty young though.

I only use flicking off when either I absolutely hate the person, or if (like you) a teacher turns around. I'll usually jump up on my desk, flick her/him off with both hands, then right before they turn around, fall gently back into my seat and continue work.

I'd pay to see that since you should cause enough noise for an instant turn around.

It's great because I'm a master at it.

Earliest memory of swearing was 4th grade. As for the middle finger, I reserve it for people I come across while driving.

Right. Another time I flick people off is when driving.

I suppose I do it while driving as well, but rarely. Just like I've only ever honked twice in my life.

God created the horn so you could abuse it. That's exactly what I do.