Meh, Always take it light heartedly. Why does Cycling have to be all srs bsns. When you get upset about it, then they feel they had an impact. If you just laugh and tip your hat, its much better. Life is 90% attitude.

One Bike is a commute, two bikes is a race. Does that mean it has to be malicious, and all, "I'M SO SUPERIOR!" no. But it's always fun to see if the other guy will try and catch you or vice versa. A little smirk is just a little gamesmen ship.

Take like too seriously and you'll just get worked up over something. Did that commuter ruin your morning? did you spend the rest of the ride being annoyed. Why? Who cares what he did.