Tween Town is the 10 episode of season 2, and the 31st episode overall. It aired on April 11, 2003.
Penny and her friends sneak into a nightclub that's exclusively for teens. Oscar and Trudy then find out that their daughter lied to them, and Penny and her friends all get grounded. Angered, Penny wishes that every parent on earth would disappear. Al Roker hears her wish and grants it. The children all have the time of their lives, until they start missing their parents.