My girlfriend and I were out puttering around on the local rail-trail when some roadie blows by without so much as an "on your left" I shout out to the guy "An 'On Your Left' would be nice!" to which he replied something unintelligable and probably un reprintable to boot. Now I'm not one to back down from anybody when I'm insulted much less when someone could potentially cause harm to either me or my girlfriend so I upped my cadence a bit (didn't even have to put it in the big ring I was so ticked) caught up to the guy, and asked him quite politely and quite calmly (not even breathing hard) "I'm sorry I didn't quite hear you what did you say?" He replied "Ummm Ummm I had plenty of room!" To which I said, "No you really didn't. I suggest next time warn people when you're going to pass OK?" "Gotcha OK" and with that I slowed down and waited for my girlfriend to catch back up. Moral of the story: Warn people when you're going to pass and don't smart off to people who call you on it when you don't -- You never know who's going to be able to catch up with you and ask you to repeat yourself. I wasn't going to hurt the guy but I did want to adjust his 'tude a bit