Dana led Jenny up the stairs to the new apartment she and Tom had rented.

"This place is much nicer than our old place, and it's closer to Tom's work."

"And it's in a quieter neighborhood, too," Jenny added.

"Hey, want to stay for dinner?"

"Love to, but I need to wash my hair; it's getting too oily, and I want to look good for a big meeting tomorrow."

"Got it. Here we are!" Dana fished out her key and put it into the lock.

The key did not turn; Dana wrestled with it a while.

"Uh-oh! The lock seems to be stuck."

"Is it an old key? If it's worn, it might not work."

"No, the landlord put in a new lock, and the keys are new too."

"New key? Umm, can I see it a minute? Maybe one of my magic tricks will work here."

"Yeah, right!" But Dana held out the key.

Jenny took the key, pushed it through her hair, held it to the side of her head, and closed her eyes in an attitude of mock concentration.

"Hocus-pocus, dominocus;
Concentrate and try to focus!"

Then she raked the key through her hair, mumbling as she did.

"OK, try it now, Dana."

The key turned the way it should and the door opened.

"All right, Jenny, what on earth are you up to now? Don't expect me to believe that magic story!"

What had Jenny done?