I was struggling up the last hill before the office yesterday when another more able-bodied rider just goes right past me and says "Good Morning". Of course, I was cordial and said the same to him, but in the back of my mind I was thinking, was that just a friendly greeting, or was it a jab to make sure I knew he wasn't gasping for air as he just slid right by.
I also get annoyed when riders go past me at a red light and I think they are cheating.
Sometimes I will see one of the 50cc mopeds and take it as a challenge.
I suppose we aren't that far removed from the animals