Wierd body parts!

[TimberWolf]

That must be inconvenient, do you hang both arms off the one shoulder or just make do with the 1 arm?

I think he meant one really hairy shoulder is good at counting. Why the shoulder's hairiness is relevant to its main talent for arithmetic I have no idea, except to make the proposition more unbelievable/weird and to add some visualisation, which to be honest I think we could have done without. Especially if it's just the old cupped hand in shoulder and pump type of counting?