My R100GS has very stylized graphics on the tank and side covers, sort of a swooshy flung-paint look with "R100" mixed in as only the German stylists think is cool.
The "100" is visible and almost readable, but most people only see the huge engine sitting below. Nevertheless, when they get to looking at the graphics they will ask if it is a "Hundred".
I just smile and tell that it is a five-hundred..... on each side.
One old dude shook his head at that and replied that it must shake pretty bad. Lol.
Actually, I love people asking any questions at all because it gives me a chance to interact. As for the "can I ride it?" question, I always say "No, I don't think you could ride it." and leave it at that. And smile, smile, smile!