The woman comes with her husband to the psychiatrist and tells the psychiatrist:
“Please, do something with my man, because he thinks of himself as a horse. “
The psychiatrist says: “Oh, it will be a long and expensive therapy. “
The woman: “Ok, don ́t worry, we have enough money because my husband has already won three horse racings. “
This joke is included in the Black Book of Jokes. You can order it from here.