Ah, this old propaganda chestnut. When I was a war reporter in Germany I saw this thing being banded around numerous times. Even before the war any of us working at our desks would receive this from Berlin more than once. I remember the response apparently was to a Bugs Bunny cartoon where Hitler was depicted as a tiny little man of course. It was said by sources within the wolf's den he fly into a rage, slowly taking off his glasses and yelling at people. He said, "How dare they? How dare they decree that I have tiny legs? Bugs Bunny, he ain't even, you know he ain't even a guy, animated by the brilliance of Walt Disney." Hitler of course was major into Disney.
Like Al Capone, who is also a noted Disney fan, Hitler would often spend nights raging about how Warner Brothers cartoons were, " The animation style was crazy, and it should be simpler." So it was passed around to all the papers that, "No, that is far from the truth. In fact, Hitler had the longest legs in recorded medical history. That's the reality of it. That's the true nature of it," they would go on, almost desperately. "How are you insinuate otherwise? Hitler has great legs, wondrous legs even. The best Legs." Of course it was still Hitler and the irony of was that cartoon Hitler leg was not even that short it just and that was not even the joke odd right.