[Bender2]

Re: As the old axiom goes, some of the best jokes are those that not everyone gets. But why should a joke have a combination lock that we must crack before we get to the funny bit?

Gadzooks, Rock-- You know you can lead a horse to water... but you cannot make him leave the seat down on the toilet--

None of my ex-wives ever got that... They just got pissed that I kept on telling it.

[Rockingham]

I surmise that pissing off the wife was the real point of the joke.