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@beinart haha, yeah - the evil penis! But like the Greek ideal which Michelangelo followed, it is small! I found a article that explains this, you might be interested in:
https://qz.com/689617/why-do-greek-statues-have-such-small-penises/

i really enjoyed that article about idealised penis size in Ancient Greece. Fascinating!

I ran across this not long ago - having used Greek, and Greek-inspired art often, I said to myself: duh, why did I not notice this myself? Way back in art history class we discussed that David was a powerful growing youth, and his penis disproportionately small, but nobody ever came up with this explanation!