If a fly can than why an elephant elephant?

This appears to be a nonsensical question, likely a play on words or a joke.

Here's why:

* Grammatically incorrect: The sentence doesn't make grammatical sense. It's missing words and doesn't have a clear subject or verb.

* Lack of logic: There is no logical connection between flies and elephants.

* Potential for a pun: The phrase "can than" could be a mispronunciation of "can't stand." This could lead to a joke about elephants being too large for flies to stand on.

If you're looking for a real question or statement, please clarify what you meant.