Jeff blushed as he stared as his mom. "I...I want to switch bodies with Megan."
"Megan? Your sister?"
"What, Mom?" Megan asked, walking downstairs from her room.
Their mother stared at her, then back at Jeff. "Well, I think you should tell her."
Jeff took a deep breath, "Hey, Megan, do you want to switch bodies?"
"Do I want to what?" she asked, with a slight laugh, "Switch bodies?"
Jeff nodded. "I know you don't believe me, but I can really do it."
She crossed her arms. "How?"
Jeff walked over to the computer. "Watch." He entered the appropriate information, then hit enter. Both he and Megan felt a strange feeling in their heads. Once the dizziness passed, Jeff looked at himself and screamed.
"It worked!" Megan's body gasped, "It really worked!"
Jeff's body pointed at her. "You really switched bodies with me?"
Megan's body nodded. "Yeah! Wow, your body feels so different."
"How long are we going to stay like this?" Megan asked.
Jeff shrugged. "I set the time limit for the entire weekend."
"I have to be a boy for two days?" she gasped, "That's not fair, I was going out with my friends tonight!"
"You mean I'M going out," Jeff grinned, "Wow, I've got to check things out!" He ran upstairs with his male sister behind him. He got to his new room first and shut the door.
She stared at her new room. It was a typical teenage girl's room with pink and white colors. She walked over to the full lenght mirrior and saw Megan's body staring back at her, wearing a black skirt and a matching tank top. She ran her hands over her new breasts and felt a wave of pleasure, then examined herself between her crotch.
"This is so amazing!" she gasped.