More of a WTF story but this happened not too long ago.
Slow day at work, only a few customers in at the time. This guy comes in, by himself, and just walks by the register and starts helping himself to food. He orders some burgers and fries from the grill and walks over to the seafood hot bar and grabs a single shrimp, eats it and flicks the tail behind the line. A waiter checks on him and refill his drink, sees he doesn't have one and tells management he doesn't have a drink nor ticket. Instead of kicking him out, he is told to pay and he begrudgingly complies.
Then he starts acting really weird and is disturbing the customers and waiters so we call security in. (I missed this particular part of the incident.) First guard says the guy is on something, so then the K9 unit is called in. Now the first guard, K9 officer, and this weird dude are trying to talk it out. Evidently this was the perfect opportunity for our hero to pull out some little cards from his wallet, claim that he is with ISIS and is currently recruiting. He was promptly thrown out.