There are practical things which contribute to a joke's funniness. People will find a joke funnier if they are sitting closer together, if it's cold, if they've paid and if they are told it's funny beforehand.
That's what I love about poetry. The more abstract, the better. The stuff where you're not sure what the poet's talking about. You may have an idea, but you can't be sure. Not a hundred percent. Each word, specifically chosen, could have a million different meanings.