It seems that there were these 3 pregnant Indian Squaws, all due to give birth at about the same time. The first squaw gave birth to a boy, and the birthing was done on a deer hide. The 2nd also gave birth to a boy, but this was done on a bear hide. And, the third had twins, two boys, and she did this on a hippopotamus hide.
I guess this shows us that the sons of the squaw on the hippopotamus hide is equal to the sum of the squaws on the other two hides.
Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII