Mark pointed the device at Jennifer and pushed the “Body Swap” button.
After pressing the button he found that he was standing in the bathroom looking at Jennifer's reflection in the mirror.
"Hurry up Jennifer! I need to use the bathroom too!" Mark heard his voice shout. He looked over and saw his own body standing in the doorway. Mark realized that he not only had his sister's body, but her life as well. He took a look in the mirror and decided that Jennifer looked like she was ready and then left the bathroom. His old body rushed into the bathroom.
Mark headed then headed downstairs for breakfast. While he was eating Mark decided what to do next.