Is it really that hard to resist hopping into an available checkout even though you haven't finished shopping yet? Do I really look that lonely/bored/lazy that you must 'grace' me with your presence? Or do you get some sort of secret jolly out of saying 'I'll be right back with one more thing!' and holding up your fellow customers for 15 minutes, to come tromping back with half a cart full more of stuff, wearing a s***-eating grin?

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