emilywee: I've noticed on my own, and also was told by a male friend, that it can be really difficult to tell a guy's penis size without actually taking out a ruler to measure. i think a lot of other factors like body type, girth, and amount of pubic hair can really throw you off. another friend told me once how she thought a guy she was with for the first time was about an average 5 or 6 inches. but then when she had sex with him she freaked out and realized he was much longer than any guy she'd ever been with (turned out he was 8.75 inches, yes she measured). his tall height (6ft 4) and the fact that his penis was slender created some kind of optical illusion! is it true that women always get the size wrong when eyeballing it or what?