So proper ettiquette at a supermarket line, an unwritten rule, like generally if you happen to glance behind you and someone has one item he's holding and you have a shopping cart, it's kind of against human nature not to suggest, hey why don't you swing by, and in a healthy line i would of course kindly refuse a couple times then blush when he insisted and go along.  But when there's only two people in line, and at that point things can get vulgar and direct, and your nature or maybe even resentments can come out

Part 2 coming up