Fine. This is how I remember it:

Hitler... has only got one ball!
Goering's... they say are awf'lly small
Himmler... is somewhat similar
And they say Goebbels
Has no balls
At all!

(but that's not really how you pronounce Goebbels, is it?)


Then of course there's

Whistle while you work
Hitler was a jerk
Mussolini
Bit his weenie
Then it wouldn't squirt!


Ah, those great historical lessons that stay with us.