Timmy's 2-D House of Horror / It's a Wishful Life (2005)

Timmy's 2-D House of Horror - Timmy and his godparents watch a movie called "The Haunted Volcano" in 3D with their 3Dglasses. After watching the movie, Timmy wishes that the volcano was real. And it happens. But when it destroys Vicky's house, she and her family end up with Timmy's family. When that happens, Timmy has to sleep outside in Doidle's little dog house. Timmy got so sick of that, so he wished that the 3D glasses that they were wearing will cause everything they see to be real & scary, this did the trick and Vicky and her family left Timmy's house with terror.
It's a Wishful Life - Timmy feels that he isn't getting appreciated, so he wishes that he was never born, thinking that everyone will be miserable without him. Timmy is shocked to find that everyone has a better life without him: his parents are rich and have a talented daughter, his best friend, AJ, has a full head of hair and is in college, Crocker is no longer obsessed with finding fairies and is now a much-loved college professor, Vicky is an anesthesiologist for Dr. Bender the dentist, and Chester now has Cosmo and Wanda as fairy godparents and uses their magic to help others instead of helping himself. To make matters worse, Jorgen is threatening to send Timmy to a world where children have improved the world by wishing themselves away. Can Timmy make things right?
Note: In the alternate reality of Timmy never being born, his parents had a daughter named Sophia, which is also the name of Butch Hartman's 2nd daughter.

Vicky's Head Gag: Haunted volcano