['i hate when i let someone out in traffic and dont get a wave', 'That has always bothered me as well.  I mean, how much effort does it take to just wave as a thank you?', 'thats what i am saying! common courtesy']
People do not seem to have much of it these days unfortunately.  I promise if you ever let me out, I'll wave.
i get frustrated when i let someone out in traffic and dont get a wave