Average penis size revealed to be less than six inches - BBC Newsbeat

The measurements were carried out on men aged between 17 and 91 and were done by a professional.

There were some limitations to the study.

Researchers say men who were more confident about the size of their penis may be more likely to volunteer to have it measured.

No correlation was found which linked race to size, however most of the participants in the study were of European and Middle Eastern decent.

There's some pretty big limitations right there . . .