What creates the humorous effect in the passage mac flecknoe?

find that the following is the most humorous passage from John Dryden's poem "Mac Flecknoe":

In prose and verse, was own'd, without dispute Through all the realms of Non-sense, absolute. I find this passage humorous based upon the fact that I have always found the title of the poem humorous as well. Outside of the title, I have also been intrigued by the "realms of Non-sense." The poem makes me think about walking into a land painted by Salvador Dali and arranged by Dante. The fact that there are, in reality, different levels of nonsense. Dryden's poem, therefore, forces me to imagine a pla