So now we know.

A new study published on Target Map shows the average size of erect penises (penii?) around the world, and they've even colour-coded a world map so you know exactly where in the world the biggest and smallest wangs are prevalent. Due to the metric system, the information is provided in centimetres rather than inches, but it still gives you a handy comparison of country-by-country knob length. The UK, United States, France and Germany all sit in the middle-table position, with typical penis sizes ranging between 12.9 and 14.7 centimetres. If you're wondering who's mixed up in the rod-size relegation scrap, it's India and the likes of Thailand and Malaysia. They're either the smallest or the most honest of course. As for the biggest, well it seems that West Africa is the most noticeably well-endowed region of the world with an average of between 16.1 and 17.9 centimetres. Here's a broad summary:

16.10 - 17.9 centimetres (largest)

Ghana

Gabon

Jamaica

Haiti

Nigeria

14.7 - 16.10 centimetres

Australia

Italy

Norway

Mexico

South Africa

12.9 - 14.7 centimetres

United States

France

Germany

United Kingdom

Spain

10.5 - 12.9 centimetres

Russia

Japan

Brazil

Indonesia

Greece

9.30 - 10.5 centimetres (smallest)

India

Sri Lanka

Thailand

Malaysia

South Korea

...still, size isn't everything.