Like any friendly cyclists, I make an effort to say hello to the other cyclist I see. I don't live in a city, so that might only be 20 or so on a ride of a couple of hours. (I can see why someone in London wouldn't do this) I get a positive response from almost every one. The only exception is men who meet this description: 1. Over 40 2. Overweight 3. Riding a flat bar road bike/hybrid 4. Wearing knee length none cycling shorts 5. Wearing a camelpak or similar rucksack 6. Usually riding very slowly in a low gear So why are these folk so grumpy? All other cyclists across age ranges and abilities seem to be positive.