Ozzy Osbourne thought Adolf Hitler was gay.

Ozzy Osbourne

Ozzy Osbourne

The 67-year-old rocker suspects the Nazi leader's relationship with Eva Braun was just a cover to hide his illegal homosexuality as he insists there was no proof they ever had sex.

He told RollingStone.com: "I always thought he was gay. Back then, being gay was a criminal offence. When he would go to (vacation spot) Berchtesgaden, his cleaners would check to see if there were any stains on his blankets. And there never were any. He couldn't have been having sex with Eva Braun."

Earlier this year, historians Jonathan Mayo and Emma Craigie claimed in their book 'Hitler's Last Day: Minute by Minute' that Hitler suffered a number of problems with his genitalia, including "right-side cryptorchidism", or an undescended testicle, and a rare condition called "penile hypospadias", which left him with a micropenis and an abnormal urethra, which meant he had to urinate from a hole on the shaft of his penis.

And Ozzy isn't surprised that the conditions have been made public now.

He quipped: "They're not gonna say he had a big d**k. People would be, "Why did you kill him?"

The 'Paranoid' hitmaker has had lengthy fascination with World War II since he was a child because he found Hitler's ideas so "insane".

He said: "I was born in '48. As a kid in England, I used to play on bomb sites. The insanity of it all got me interested. If Hitler honestly thought he was going to rule the world with people following him, he must have been fucking insane. He tried to invade Russia  . . .  that's, like, four time zones. Even with 3 million men marching, it ain't gonna last."