Magic trick

Samantha looked down at her brother Will with a flame of fury in her eyes. He had told her that she wanted to show her a magic trick, so she watched as he got into a straight jacket and suspended himself upside-down from a doorway. He hung there for about 10 minutes with his eyes closed.

"So, where's the trick?" Samantha finally asked.

Then there was a rush of blood to her head. She was soon looking down at her own body with its tongue stuck out.

"That's the trick!" Will laughed from inside his sister's body.

"You jerk! Let me down! NOW!" She screamed.

"Not until you let me agree to keep your body for a week! I could keep it for longer; it's not like you have any idea how I swapped our bodies!"