Under the heading of "No good deed goes unpunished..."
A few years ago, my wife and I were touring thru Yosemite on my bike, as we pulled into a scenic view area, there was a guy on a Brand New squid bike (still had dealer temp. tags) a little ways ahead of us. I see this bozo swing off the bike, kick down the side stand and turn and walk away, WITH THE BIKE FACING DOWN HILL. I can see the bike is already rolling forward, so I pull up close on the right side and stop, grabbing his rear grab handle, just as the side stand snaps up. Bad situation, ya see, I've got short legs. I'm already at a disadvantage on my own bike, sitting at stop lights either shifted sideways on the saddle or up on my toes trying to reach the ground. So I'm trying to keep both bikes upright, on a hill, yelling at the top of my lungs because I know I can't hold this long. Seemed like forever, must of only been seconds before I had to let go or lose both bikes to gravity. Stupid jerk never heard me yell, but he sure heard the crash of his pretty toy hitting the ground (although I did ease it down as far as I could before having to let go.) Should have seen it coming, El Jerko didn't speak a word of english, and I couldn't get him to understand that it wasn't me who knocked his bike over. After 8-10 minutes of trying to cross the language barrier, I finally gave him the one finger salute and we took off.
Makes it hard to try to help people...