I began this thread being surprised that people are offended at the jokes, but now I am utterly amazed that the milking the horse joke got morphed into horse masturbation. And by the very same people who are offended. Maybe I'm just a city slicker so I didn't think about it beyond what you said, that is, not being able to tell the difference between a horse and cow. But there's an awfully huge difference between milking a horse by mistake and masturbating a horse. To take that joke and run it to the extreme of masturbating a horse, and then take great offense at the First Lady for telling a joke about sex with farm animals is astounding. Makes me wonder where those people's minds are.
In the gutter. Why else would that make something out of nothing?