Hitler was a high school dropout. Not only that, he repeated his sixth year and got rejected twice from a art school. Therefore often people said Hitler's stupid but he was a genius in public communication. His charisma made people believed whatever insane things he claimed. 

2. He liked being kicked

 According to the recorded history, Hitler begged to be kicked repeatedly by a woman and had his guards videotape the torture of Jewish people so that he can have them as his home-viewing  entertainment.

3. Afraid of blades

Hitler was afraid of blades that he felt terrified when he saw other people having blades in their hands during haircuts. This is said to be a paranoia he was afraid of people wanted to take his life. Therefore, he always shaved himself.

If you ever got invited to have a dinner with Hitler, you would be surprised that he was a vegetarian. This is because he saw vegetarianism as bridging a spiritual divide. 

5. He invited the concept of blow-up dolls

In order to avoid his soldiers sleeping with each other or procreating with Jews, Hitler came up with a brilliant idea: the blow-up doll.