I was always taught by my driving instructor that when out driving if someone lets you pass or let's you out of a junction when they don't have to then its common courtesy to wave, smile, nod your head or if dark flash your lights to thank them.
I've always done this and to be fair most drivers do acknowledge you when you let them pass. So it really pisses me off when they don't. Just now I was driving into my street, it's a tight corner with cars parked either side and as I turned in another car was driving towards me driven by an older looking lady. Obviously due to cars being parked there was no where for her to pull into and it was quite obvious that she had no intention of reversing to allow me to drive onto the street despite it being my right of way. So to avoid a stalemate I reversed back onto the main road, something which is obviously quite dangerous and possibly illegal. She then drove on and completely blanked me, no smile, so wave no nod, nothing.
I didn't have to reverse to allow her to come through, it was my right of way after all. I could have been really awkward and refused to budge making her reverse back down the street but I didn't. An acknowledgment would have been nice, to me it's the driving equivalent of not saying please or thank you in a shop or when someone holds a door open for you.
Why are some people such rude, ignorant cunts? It really, really pisses me off for some reason?