The "One Nut Wonder."

No wonder Der Fuhrer was a sour puss

 A medical document shows that Adolf Hitler only had one testicle, German media said on Saturday, suggesting there is some truth after all to a popular British song that says the dictator had "only got one ball".

A medical record from the time when Hitler was put in prison after the failed Munich beer hall putsch in 1923 shows he suffered from "right-side cryptorchidism" - a condition where a testicle fails to descend into the scrotum - media reports said.

The doctor's notes were thought to have been missing for years but reappeared at an auction in 2010, at which point they were seized by authorities.