When Cosmo is punched by Punchie (believing him to be Poof), he says "Oh, you've got a good right hand. You got that from your mother." This could actually be a reference to the same episode, when Poof turned his parents into the characters of that show (Wanda into Punchie, Cosmo into Munchie).
In this episode, Vicky and Mr. Turner act as if they never met even though they've known each other since the beginning of the series.
Also, even though he learned that Vicky is evil, he didn't fire her. This is mostly because he's being treated as a child
Mr. Turner's leash disappears and reappears throughout the episode.
When Chloe gives Foop a music book her glove is missing. Her gloves are also missing when she is looking over the couch with Timmy, Foop, and Sammy.
Timmy, Chloe, Poof, Foop, Sammy, and Mr. Turner seen are together screaming when Vicky breaks into the house, when they were not near each other or near the door as Mr. Turner was at the phone Timmy, Chloe, Foop, and Sammy looking over the couch and Poof dissapeared (see goof below), before she came in.
Cosmo, being stupid, uses the word "lightyear" as time instead of distance ("I ordered French onion soup like a lightyear ago!").
Poof is shown with Timmy near the couch even when Foop shows up, however, in the next shot Poof is nowhere to be seen.
When Vicky enters the house, she uses a chainsaw cutting it down. However at the start of the second half of the episode it looks like she entered the house normally.
While Vicky sits on Mr. Turner his tail is missing in the scene.
Vicky takes Poof's Rattle and Foop's Bottle, however once Poof gets his rattle back, Foop's bottle is missing.