I have a Harley and it was passed down to me from my father so it has a lot of sentimental value to it. I would probably ask them what the hell they are doing on my bike. That's a big no no in the motorcycle community. That's like opening the door to someones car and sitting in it while they are in a restaurant. If they gave me an apology and got off I would explain to them that motorcyclists are not fond of people sitting on their bikes and then let it go. If the gave me attitude I would probably threaten to kick their ass...
I'm not a hardly guy but if you were on my bike after I had a few beers in me, I'd have to hit you, receptively, until we were sure as to which one of us had won. My money is on me.
