The person who works in the warehouse to pick the items off the shelf when an order is placed. You know, the job you were conned into doing when you enter one of these warehouse-style stores that we are talking about.

It wasn't always that way. Historically, you would place your order at the front counter and a diligent worker would work behind the scenes to gather your request. Some businesses still operate this way, to be sure, but it has largely gone the way of the dodo. It is generally more profitable when the customer does the work.