Eons ago back in the '70s or so, I was busy watching my legs go round and looking at the front derailer and the chainrings... obviously my head was down... and I plowed right into a camper that was sticking out of the back end of a truck. It was at just the right height for the bike to go under... but there I was still on the saddle, plastered to the back of this camper. Man, did I feel stupid.

It was a quiet residential street... and no one was around, so I just peeled myself off the camper and slinked on outta there...