When I had the '85 Honda Nighthawk 550 that I got free, I let all my friends ride. Of course, I made them wear all my gear, and they all had a blast. Never got laid down, but it was funny watching them try to ride it.
Now that I have the ZX11, nobody rides it. My Dad will ride it once in a while, I let a friend's Dad ride it because he has the money to fix it if he wrecks it. I'm just waiting for my Mom to ride it, she wants to really bad, she grew up on bikes, just like my Dad.
I still wish I had that little 550 so I could let my friends ride it around parking lots, that thing was a blast.