I have been trying to find a down loadable version of this song to pass on to my nephews. My dad used to sing it to us on road trips. The lines I remember are:
"Well, I was goin downgrade doing ninety mile an hour, when the chain on my bicycle broke. I was skinned all over by the rocks and the gravel and punctured to death by the spokes. Now I ain't a-lyin, I'm just layin here a-dyin with these handle bars stuck down my throat."