== In The Ancient World == 

 I find it hard to believe that the ancient Romans would prefer small penises on men. I'd love to see some citations on this.  

 I can see that they represented warriors, etc. with flaccid penises but had they preferred smaller penises on men, surely they would have scuplted guys with small (but obviously erect) penises? As I said, I'd love to see some citations on this.