I love you cyclists. I am one of you. This summer I have used my bike as my sole means of transportation and it been great. But, cyclists, you sure do a lot of stupid things. None of them more galling than pointing with your right arm to signal a right turn. The legally correct signal, and the one that makes goddamn sense, is to hold your left arm at a 45 degree angle. There's a good reason for this. Cars can see it. When you use your right arm your own body shields the signal.
Cycling inherently looks silly. Cycling cannot be dignified. So just go ahead and give into it. It might just save your life.