When I was a kid I had a mate who would regularly masturbate his dog to completion for a laugh. It was his (and the dog's) party piece. One summers day whilst camping in his back garden he brought that dog off, lovingly, 6 times.
On another thread someone put up a cover of Private Eye, this one was the one I always remembered as our ex RSM was one of them lot and he had this cover framed on the wall of his office. Still makes me chuckle.