I guess it freaks out everyone when a cyclist actually takes not only a lane, but a
middle lane.
I can hear 'em saying, "This isn't China, you know!"
Riding as far to the right as practicable (who uses words like, "practicable..." ...oh, that's right, I do!) does not mean you can't pass. You can legally pass a car that's moving slower than you, which means changing lanes--but you can bet nobody will believe their eyes.