Herz wrote:17 cm (~6.7") in length;
16 cm (~6.3") in girth;
6 cm (~2.35") in transverse diameter when fully erect.
Yes, guys do lie about such things. People do that in general: add "women" and "push-up bras" together...
P.S.: Part of the issue men have with sizes is that many women also have a thing for size, and that includes length; in many circumstances, such "things" being had are not pragmatic (i.e. "real"), but rather plasmatic ("constructed") and reflect more the drive imposed by ideals, societal imprinting, bragging rights preferences, intent to humiliate — men can have their ego hurt by the notion their cocks are tinsy-small, just as women can with their breasts — and more of such nonsense than an actual "pull" towards greatly sized appendages (of either sex)... The fact that such aspects are also enforced on men by other men as well as themselves only further makes that demand real in their head. It is an awkwardly vicious circle.
Also doesn't help in porn where the blokes cock looks 'big' and we're influenced that bigger is better. Its the same with the Media and women, just don't see our influence in the local newspaper stores. XD