Never, ever take the time to yell or swear at peds or motorists no matter how angry you may be...you only give the impression of a self-righteous jackass who has plenty of time to waste, and the ped or motorist is likely respond to you with more self-righteous jackass comments.

When a motorist, ped, or other cyclists does something stupid and gets in your way, just keep your eyes on the road and shake your head in an obvious gesture of frustration. At that instant, you have exude seriousness, as if you are annoyed but you don't have any time to waste. You have to look as if you were headed to some emergency or trying to win the the most important race ever. Its the best way to make someone feel a little stupid and belittled, but at the same time, it won't give them the chance to respond to your self-righteous reactionary bull**** with more self-righteous reactionary bull****.