From my “Murphy’s Law” desk calendar archives thanks to Aunt Evelyn, Uncle Pipey, and cousin Nancy:

Hartley’s First Law: You can lead a horse to water, but if you can get him to float on his back, you’ve got something.

Goofy guy’s comment on Hartley’s First Law: i wish i had a horse that could do that, but then i would have to have a horse, which would be fun, too expensive, and my wife would want to make him a house horse.