I'm not saying anyone looks stupid wearing "race" clothes. I'm just saying it ain't for me. People who wear that stuff look like.....um..... Bicycle Racers.
Non bicycle riders do make fun of people who wear tights and pointy helmets in public. FWIW, I wear a pointy helmet and I own a couple of plain white jerseys.
I don't understand why motorcycle riders have the the need to dress in fringed black leather either.
Dressing in a costume would be out-of-character for me.