First, I'd like to say that April Fool's Day is a stupid holiday for stupid people. If I catch anyone trying to play a trick on me, they will pay.
That being said, I'm feeling generous. I'm willing to offer a thousand points of extra credit for a simple, three-page essay on the historical significance of erotic art. This is likely the best offer you'll get from me all year. I highly suggest you take it.
Additional extra credit will be given for the inclusion of illustrations or photos as examples of erotic art.
EDIT: To inspire you, here are some samples from my *ahem* own personal collection:
[Dickgirl hentai and loli]
((OOC: Striked out is deleted, but feel free to have seen it before hand. ;3))