At the other end of the scale, Cambodian men are said to have a mean size of just under 4 inches (10cm).
The UK and US are nowhere near the top ten, when it comes to size.
In fact, neither country comes in the top 50.
Britain comes in 68th place with a penis size of 5.2in (13.1cm) and America is in 60th place at 5.4in (13.5cm).
Australia ranked 43rd with an average size of 5.7in (14.46cm).
To find out which countries have the largest penises, researchers in Germany reviewed more than 40 recent studies involving thousands of men.
Britain comes in 68th place with a penis size of 5.2in (13.1cm) and America is in 60th place with men having an average size of 5.4in (13.5cm)
