Certifiable Super Sitter is the 35th episode of Season 10 and the third half hour special. This episode marks the return of Poof and his only appearance in Season 10. This is also the first episode to premiere on Nicktoons instead of the main channel.
Chloe meets Poof for the first time when he comes home from school on Spring Break. Cosmo and Wanda win a free French Dinner, so Chloe gets to babysit Poof and his friends. Everything goes well until Vicky shows. up.
This section requires expansion with: the rest of the episode.
Cosmo and Wanda are excited because their son, Poof is coming home on Spring Break. They decorate Timmy's bedroom in celebration of his return. When Timmy enters his room, Cosmo mistakes him for his son. He does the same thing with Chloe. Wanda then shows Cosmo a picture of Poof, and he thinks it's actually their son. Chloe then shows her excitement towards meeting Poof. Timmy says Poof is awesome, because he can wish up "totally inappropriate but super-cool stuff". He then shows Punchy the Boxing Kangaroo to Chloe. Cosmo mistakes Punchy for Poof, and Punchy proceeds to punch him. Then, the Spellementary School bus arrives at Timmy's house, and everybody is excited to meet Poof. Cosmo mistakes a balloon for Poof, and he accidentally pops it. Poof gets out of the bus, and Timmy, Wanda, and Cosmo proceed to hug him. Wanda tells Timmy that Poof's voice is changing. Poof proceeds to do various impressions. Chloe then asks Poof if she can sniff his head, and Poof allows her to do so. Chloe describes the scent as smelling like "Bunnies and spring-time." Poof does a Donald Trump impression, and says he has brought a friend and a harbinger of doom with him. Then, Sammy Sweetsparkle and Foop proceed to enter the room. Foop want's revenge. Foop said he would have went home, but Anti-Cosmo and Anti-Wanda moved without leaving a forwarding address for him. While outside Foop tricks Cosmo and Wanda in winning a french dinner. So Chloe gets to babysit Poof and his friends. Cosmo and Wanda get pushed in a black hole. Mrs. Turner asks Chloe to babysit Mr. Turner, while she goes shopping. Chloe tells a joke which everyone (execpt Foop) Laughs. Chloe thinks Foop is good. Back inside Sammy Sweetsparkle is playing with toys. Foop destroyed it. Timmy asks Poof to poof up something. He poofs up a Mr. Croker punching bag. Chloe sings, Foop puts up a spider but Poof got rid of it. Chloe hugs Foop. Foop didn't hate it. Vicky arrives. She wants to destroy everyone. She takes Poof's rattle and Foop's bottle. Vicky pushes Timmy and Chloe by using a mobile trap door causing them to fall down a basement. She makes Timmy run and Chloe pick up litter. Vicky uses Mr. Turner, Sammy, Foop and Poof run. Foop saves Chloe. Poof then gets his rattle and pushes Vicky away. Outside Mr. Turner, Sammy, Timmy, Chloe and Foop are in a pool tossing Poof. Chloe thanks Foop for saving her. Wanda and Cosmo and Wanda thanks Foop for the dinner recommendation. Wanda asks Poof if anything happened. Poof said that nothing happened. Mrs. Turner comes back. Punchy punches Cosmo as the episode ends.