Er. Um ... well. Gosh.
Just kidding.
I think the big reason there was a disagreement about the humor is that some of it was juvenile, and some folks like to think they are beyond that. How many times have we seen the cartoon of the bull in the line of cows to be milked? -- I still think it's funny.
I never get that far away from the juvenile myself.
But then, I'm the kind of guy who wants to know what George's "that old joke again" was. I'm sure I've heard it, but I like to be positive, ya know?