The survey of more than 10,500 men in 25 European countries was conducted by the German-based Institute of Condom Consultancy, The Daily Telegraph reported Saturday.

Frenchmen topped the survey, claiming an average penis length of 6.09 inches -- 1.2 inches longer than Greeks, who had the shortest average among men participating in the survey, the Telegraph reported.

At its annual fair -- called "Pimp Your Condom" -- the Institute gives advice on condom size and how to avoid sexually transmitted diseases, said Jan Vinzenz Krause, the institute's director, who once proposed an aerosol latex spray-on condom in a can.