Pretentious? Moi?

Stumbled across that online, and it was claimed to be the "only" two-word joke in existence. I find that hard to believe.

Now there's a distinction between that example, and an oxymoron, most of which are two words, but do not constitute a grammatically complete sentence.

Still, an oxymoron is a joke in the sense that it's humorous. Look up the definition of "joke" and you get something to this effect: A thing that someone says to cause amusement or laughter, esp. a story with a funny punchline. But an oxymoron has to be "set up" so you know it's being used as an example of a self-contradictory expression. You can't just walk up to someone and say "military intelligence" (George Carlin's classic example) and expect to get a laugh. So it would take more than two words if you include the setup.

Nowhere in the definition of "joke" does it say "a joke must be a stand-alone complete sentence or series of sentences." But since a joke is something communicated, in speech or writing, it would seem to me it must be grammatically complete. Even Henny Youngman's classic one-liners were complete sentences, e.g., "Take my wife … please."

If you Google "two word joke" you get oxymorons … way deep into the page rankings. You also get the occasional formal name, like "George Bush," but that's satire or opinion, not a true joke. I only stumbled across the example in the subject line by accident in an unrelated search.

So this post is less a question to be answered, and more an invitation for discussion. If you know a two-word joke that isn't just an oxymoron, and constitutes a grammatically complete sentence (or sentences, as in my example) I'd love to hear it. Or is an oxymoron just a sub-class of joke? Or am I being too literal in my interpretation of the definition of "joke?"