Maybe you should think...

So yesterday at work these three guys come up with a cartful of electrical stuff, and I start ringing it up. I get about halfway done when one of the guys goes, "Wait, we forgot something." So I finish scanning the stuff while he disappears, and he makes it back with some electrical tape just as I finish. I add that, and tell them the price, and the guy again goes, "wait, we forgot the wire." So they say go ahead and get the next person. I save the transaction and they disappear again. After a while they come back with a roll of wire, and I'm about to add that when the other guy goes, "wait, we need two more rolls, you can't just use one." So I resave the transaction, and they disappear again. I'm starting to get irritated at this point, and think that maybe they should finish shopping before they come to the register. So they bring back some more wire, but this time one of them decides they also need a wheelbarrow. Another of the guys tries moving the cart of stuff, and we start to wonder if they're really idiots or just trying to steal some stuff, so by this time several of my coworkers also have their eyes on them. So, finally, they come back, they have wire, they have a number for a wheelbarrow, and they pay for all the stuff. It took way too long, and I really do think most of the problem was lack of intelligence, but wow.