The Penis in Classical Sculpture by Monty Boyce
Most do indeed have small penii.

The thing about that is that, with Ancient Greek sculpture in particular (and thus by default also Roman, being as it was for the most part simply copies of existing Athenian sculpture) the forms depicted were intended to represent the ideal male form.

This presents two different but equally valid propositions:

1) The Greeks liked small cocks - the smaller, the better - their ideal man was hung like a dormouse, or
2) They wished they could have cocks the size of those depicted in their art. Put another way, real Ancient Greeks had penises so microscopically miniscule that the laughably-small members on their statues seemed enviably large.

In seriousness, I think it has something to do with the Greek obsession with old man/young boy bumsexuality - the idea of youth being perfection and some kind of warped idea of purity.

The filthy old benders.

*This has been one of an occasional series of essays*
( Monty Boyce, My cheese game is strong, Fri 1 May 2009, 13:52, Reply)