Copperhead + Timber Rattler
My Dad was driving our caterpillar backwards one day and when he looked forward again there was a big rattle snake coming down the left track and it was ALL pissed off and coiled for a strike.
He jumped clean off that caterpillar in one motion and watched as the snake ended up getting dumped off the off the back of the track and run over.
I asked him if the cat had an ejection seat because it sure looked like it when he came off there, but he said that was because his butthole puckered so fast it shot him right out of the seat. :D
Funny as hell, and we laughed for years about that.