Well BeBop, there's guys like diggy18 out there and he makes sense. If you are totally wasted by your efforts or too into your day dreams, sometimes it is hard just to lift your hand from the bars or even the corners of your mouth. You have to realize everybody doesn't act friendly. It's OK!

Don't worry about it. If you recognize someone that you know doesn't wave back, please don't bother them any more. And if he notices you for the first time when he needs a pump or a tube, smile, wave and keep on riding!