Dick size by nationality
http://brobible.com/life/article/ave...is-size-study/
If ur born in the Congo ull have to have a big cock to survive (7.1 inch)!
Australia is only 5.2 inch on average.
Again the vagina is only about 4 inch deep for all girls so why do people care. Smaller cock is actually better for the girls as hitting the cervics hurts. The G-spot is only 1 to 1 and 1/2 inch deep so if u get ur sex position right u be hitting the G-spot with a 1 and 1/2 inch cock.
The old saying is true is how u use it. As a 2 inch cock is enough to satisfy a lot of girls.
It's stupid to want a large dick unless ur sadistic and want to hurt girls OR u like big booty and need the extra length to go in