I think I have figured Bob out, here's my theory:
Bob is a LMP, (and a damn good one from what I hear) and thusly, spends all day rubbing people the right way.
(Can you see it coming? )
It would follow, then, with all of that right-rubbing, there must be some balance forthcoming.
And that, my fine-fingered friends, is why we all rub Bob the wrong way.
We balance him so he can continue his right-rubbing to those who need it.
Here it is proven: