how many times someones total has been $6.66 or some other amount with 666 in it (ex: 26.66) and people FREAK the fuck out. This happens way more often than you would expect and people literally either take something off or add something else so that 666 isn't in the total. Then you get the cool people who just swipe their card and are done with it. My favorite old couple got 6.66 one time and I feared the worst because they were old white people but they didn't even bat an eye. Props.