OK, since there's a lil' block of non-gaming stories here, I'll add a couple of mine:
We've got a bunch of these lil' gift bags, just big enough to hold a gift card. They're normally 99 cents, but some old colors are 50 cents right now. So, I'm cleaning by the clearanced bags, and they're a couple of trashy-ish (ya know, messy hair, baggy flannel) ladies looking at the bags. One comments: "50 cents... I'll pay 3 for a dollar, and I'll even take em all off your hands..." For the first time with an annoying customer, I'm all smiles at this point- becuase I know provided I don't flat-out call her a moron, I can say most anything I want and the manager'll have to let it slide (who haggles in a retail chain store, anyway?) I reply with an overly-cheery "Nope! Prices are set by corporate, I can't change 'em." I then get a mini-lecture about how we charge too much for the stupidest things and I should tell the corporate people that. "Sure will!" I say. I have no idea how to contact corporate.
Anyway, she buys 10 bags despite, leaves, and comes back about an hour later to return them. Apparently, she was looking for votive holders and found real ones at Wal-mart, so she doesn't need the bags- which she was going to use instead. I don't say anything, but I'm thinking, 'even ingoring how stupid is was to buy a paper bag to put a candle in- we sell votive holders! If she'd asked that first, we coulda skipped this whole thing!' But I suppose that wouldn't have been funny...
Another time, a lady returns something- I forget what- and I have to give her cash (she paid with a debit card, and our crappy-@$$ register don't like to process debit returns.) Now, I dunno if this is a state or federal thing,or just corporate policy but for cash returns we need fullname, street address, city-state-zip, phone, and a signature. I remember once being told it's a tax document issue, so I tell people it's a federal thing. Anyway- this lady write in a PO box, so I tell her we actually need a street address, please. She tells me this is the address she uses, and her daughter (I assume) chimes in that that's even what on their checks. I tell her it's a federal issue and I need a street address, and it would be the same issue for a check with a PO Box. "But I didn't PAY WITH A CHECK!" "... I know. I still need a street address." At this point, she pulls out her driver's liscense and throws it at me (at ME, not the counter). As I write down the info, she says something about "What if someone showed up at your house, pointing a gun, huh?" I can only assume she either thought our store employs psychos, or that we like to share personal info with prison convicts. She was so mad, she nearly left without her refund money- I had to stop the daughter and give it to her.
And this is why they teach us to hold onto the cash until we have the info...