So… what happens when there’s multiple customers shopping at the same time?

You have to get things yourself. Don’t work him like a dog!

I think this is BS, quite frankly. But it’s nice to think about it being real.

I mean, I don’t see why it wouldn’t be real insofar as a local hardware store has a dog, and the dog likes to help (or ‘help’) customers by carrying things and keeping near them until they reach the checkout.