Can we trust that average penis is 6" NBP for white people and 7" NBP for black people ? Black people are really longer but white people are thicker ... This is maybe true . Italians are biggest and thickest,maybe thickest in world. World map of The Penis Size Worldwide (country) by Country - TargetMap This is good but Kongo,Cameroon,Ghana study is self-reported when study in Ecuador are measured (Venezuala,Bolivia,Columbia - measured). Netherlands is measured at 6.25" like Senegal,Gambia,Egypat .