Mandy smiles at the end of this episode. However, in a later episode, it is mentioned that if Mandy smiles it disturbs the natural order. Also, they say that Mandy has never smiled before, which is not true.
Mandy: (to Grim and Billy) I wish you two could shut up!
Mandy: I wish that everyone would go away!!
Mandy: "Geud morning Mandy, from Billy" Nice try, Billy, but not "geud" enough.
First appearance of Grim's mother.
First time Mandy screams and raises her voice.
The Evil Con Carne episode Tiptoe Through the Tulips Parts 1 and 2 Originally aired with this episode when the show was "Grim & Evil"
Second time Mandy smiles since Meet the Reaper.
If you look carefully at the flag in Tiptoe Through the Tulips you can see the Irken Logo off of Invader ZIM!