A few years ago a friend and I rode up to a gas pump on our bikes ('00 VFR and '99 900RR) and the attendant says "Gas or diesel?"
...umm, yeah, I think we'll fill them ourselves.
The other day I'm at the grocery store and cashier sees my helmet and asks what I ride, I say a BMW, he says "hmmm, I fucking hate BMWs". I reply, "Well I guess I better sell it". I'm not sure why complete strangers think their opinions matter