Banjo Johnny: I guess this one (not quite what Estela is after) has different versions all round the world. What I remember, here in Australia, is:
Hitler, has only got one ball,
Himler, has two but very small,
Himmler is something sim'lar,
But poor old Goebels has no balls at all. (Shove the pisspot at him!)
I will be interested to see if Estela can scare up this more discreet version.