Why did the members of a new rock band wear costumes, masks, and capes?

Why else, because they were a super-group!

The owner of a musical instrument store summoned one of his staff who was overheard arguing with a customer. He asked her what they were arguing about. "She wanted a guitar, and I told her we didn't have one."

The boss said, "So she wanted a guitar, the customer is always right. Why did you give her a hard time?"

"Well, for starters, she was left-handed, so she wasn't right."