1x12 Journey to the Center of Carl / Aaughh!! Wilderness!!
First Aired: Jan. 31, 2003 on Nickelodeon
Summary: Jimmy creates a Sick Patch to make him and his classmates get sick and stay out of school. But when the Sick Patch dissolves into the kids' skin, Jimmy has to go inside Carl to track down the germ and make a vaccine.
Guest Stars[no credits found]