The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxA restaurant owner and his staff were left completely stupefied when a mysterious customer ordered a simple meal then left a whopping five-figure tip.In a video interview, Mike Zarella who owns Stumble Inn Bar and Grill in Londonderry, New Hampshire, told WMUR 9 he "thought it was a mistake".The customer left an eye-watering tip of $16,000 (£11,000) after having a few hot dogs and some non-alcoholic drinks, with the bill coming to less than $40 (£29).Recalling the moment he and his staff found the tip, Mike says: "It was on the credit card statement, they put it down next to the register, and he said three times, 'Don't spend it all in.
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