Way of the Dee Dee is the first part of the tenth episode of season one of Dexter's Laboratory, which aired on December 11, 1996. In this episode, Dee Dee tries to teach Dexter what it's like to be carefree instead of focusing on science all the time. Upon doing so, Dee Dee learns that Dexter is much more carefree than she is, even going as far as destroying his own lab in the process.
Dexter becomes fed up with Dee Dee constantly destroying his lab, and calling her stupid. Dee Dee said how she‘s simply expressing herself and said how just because she tries to have fun doesn’t make her stupid. Dee Dee pointed out to Dexter that while she may not be a science genius, she knows how to do regular stuff like climbing trees, petting animals, and even tying her own shoes since Dexter’s boots are only zipper. Dee Dee admit’s that she feels sorry for Dexter because he spent his time cooped up alone in his lab and not even bothering to go outside and do regular things truly exploring life. She decided to leave Dexter alone since the world is her laboratory.
After leaving, Dexter realizes that Dee Dee is right and ask her to help him be free. Thats when Dee Dee decides to teach Dexter how to find his inner peace and go beyond his secluded and lonely lifestyle. But Dexter gets carried away with this new way of life and Dee Dee gets worried when he starts destroying his own lab and blames herself, then runs away weeping: "Oh, what have I done?". After Dee Dee leaves, a seemingly unaffected Dexter once again starts working on restoring his lab that he had destroyed, while once again devoid of the joy and enthusiasm he had briefly come to know.