Doubly Impressive

(My parents are the customers in this story. They are staying at a very charming B&B in Britain.)

Mum: “I can’t believe how well the owner looks after this place, especially considering that he’s on his own.”

Dad: “I know! Everything’s spotless. He must work terribly hard; it seems that every time I turn around I see him busy doing something.”

Mum: “Hey, there’s the owner over there. Let’s go tell him what a great job he’s doing.”

Dad: “…that’s strange. I saw him only a few minutes ago, and I could have sworn he was wearing a different shirt.”

Owner: *overhearing* “You do realize that I have a twin brother, right?”