Sporting Uruguay thieves wait on customers | Oddly Enough | Reuters

"Three thieves robbing a sporting goods store in Uruguay spent half an hour waiting on customers before making their getaway "

It may sound weird to you, but this would happen several times a year at 7-Eleven. A thief would show up and find out that he was going to end up with thirty bucks plus some rolls of coins, which is about all you can get robbing a c-store, so he would wait on customers for a while to get some more cash.