for the joke to work, there had to be a purpose for her precising MALE, that's what got the laughs (2nd laughs).
What did you imagine he was fussing with, the carburator?
I imagined he never really tried to milk a horse. And then there's the visual of mistaking an udder for a neutered animal. Not gonna happen. Maybe one of hubby's distant, one-eyebrowed cousins would be that stupid. But that's another story.