The scientific report says the average male’s manhood is 3.5-3.7ins when flaccid and between 5-5.7ins when erect.

The Paris based group also say the circumference should be between 3.3-3.5ins when ‘at rest’ and between 3.9-4.1ins when aroused.

The Academy said men needed to be aware of ‘normal’ penis size before they resorted to potentially dangerous operations.