America, your penis is shrinking

[Tony_Stark]

Seece said:

After a little research, the average American penis is 5.0. Which is below WW average I think. So any smaller and that's getting into dangerous territory 0_o

On that list, only 19 countries have a smaller average than America, out of 150.

So... who the heck went around the world measuring penises? And why didn't they measure Chuck Norris's penis? It would have doubled America's average penis size.