Casino Poker Card Room - Red Shirt Dog
Upon entering the Casino Poker Card Room, the stranger noticed a sign saying; DANGER! BEWARE OF DOG! posted on the glass door. Inside he noticed a harmless old hound dog wearing Red Shirt asleep on the floor besides the cash register.
He asked the store manager, "Is THAT dog wearing Red Shirt, folks are supposed to beware of?"
"Yep, that's him," he replied.
The stranger couldn't help but be amused. "That certainly doesn't look like a dangerous dog to me. Why in the world would you post that sign?"
"Because", the owner replied, "before I posted that sign, people kept tripping over him."