More accurately, your comments had no point and your assumptions were way off.
I'm curious, do you believe that the First Lady was telling a joke about the President of the US, jacking-off an animal?
Do you think her joke writer or herself would think that would be funny?
How is it funny? To masterbate an animal?
It's not.
It was funny because it is a very old funny farmer joke, and she always makes fun of him trying to be a rancher, she has told many jokes of the city vs rancher kind.