Seriously, I don't know what it is about the grocery store checkout, but why does it make some parents the laziest parents in the world? Newsflash, I'm NOT a babysitter. Your child picking up giant glass bottles is NOT "helping" me or cute in any way. When your child insists on scanning items, and you refuse to acknowledge my asking for your help (ie, watch your own child) it's NOT my fault if something gets rung up twice. Your child screaming and flopping around on the floor is not cute, either, and it's NOT my mess to deal with. Please stop treating me like I'm your nanny. Corral your children and let me do my job. I will do it quicker and more efficiently, so you can go home. I didn't birth these children, I'm not watching them so you can let them do whatever they want, while you zone out or browse tabloids.