A serious question: Why is this not a poem?

There really does have to be an element of the untranslatable about a poem -- even the simplest rhyming verse should leave a little bit to the imagination.  The trick with a limerick, for example, is to hint at a scene rather than make it explicit.  The same really goes for any art.  Would Mona Lisa be so famous for her smile if you could see that Da Vinci had his pants off while he was painting?