KOREAN scientists say the ratio between the second and fourth fingers is linked to stretched penile length.
The research was published online last night in the Asian Journal of Andrology.
The scientists descended on 144 Korean men aged 20 or older who were in hospital for urological surgery and who signed away their right to dignity.
The hand in question was the right one and the fingers were the second and fourth - otherwise known as index and ring.
The subjects were anaesthetised, which is important, because their tockleys needed to be torpid so the scientists could stretch them.
To make sure there was no preconceived notions, one measurer was designated the fingers and another got the goolies.