Nightmare Fuel: Mary Poppins
- Michael's turn carrying the Jerkass Ball climaxes with him swiping Mary Poppins' magic compass. Instead of naming the four directions one at a time, he quickly says all of them in a row. This causes everyone that Michael and the others met during their first journey with the compass to surround him with bloodthirsty expressions. The sight scares Michael into dropping the Jerkass Ball by the time Mary Poppins swoops him back to the nursery.
- Home alone, Jane pays a visit to some boys who reside in the design of an antique bowl. When she asks to go home to her family, the boys' grandfather tells her that when she entered the bowl, she also became teleported 60 years into the past. With her parents not yet born, it looks like Jane has no choice but to live as a Fish out of Temporal Water with boys who are Older Than They Look...until Mary Poppins whisks her back into the real world.
- Michael has a similar experience in one of the other books, after journeying to a star inhabited by talking cats. He becomes seemingly unable to return home because time passes more slowly on the star than on Earth, and during the time he spent with the cats, everyone in Michael's family died. Their house also became abandoned.
- When Jane and Michael flee the bank through an alleyway, and encounter a creepy old lady, a large black dog, and a shadowy figure. (Fortunately, the last one is just Bert covered in soot.)
- The nursery-cleaning scene. The jerky Stop Motion special effects have not aged very well. A popular Parody Trailer on YouTube demonstrates that with an audio/soundtrack swap, it almost looks like a deleted scene from Poltergeist.
- Bert's verse of "Chim-Chim-iney" where he sings about "the chimney sweep world" is very accidentally unnerving and sinister sounding. Particularly how he ends it with an almost maniacal smile after singing "on the rooftops of London...coo', what a sight!"
- Just... the way Dick Van Dyke reads the line "There's things half in shadow... and halfway in light". Chills, man.
- The stage musical features a new, scary number called 'Temper, Temper' where Jane and Michael's toys grow bigger than they are, come to life, and hold them trial for breaking their tempers. Remember all the mean things you did to your toys? Cover your children's eyes... and your own.
- The song was deemed so scary that it has been replaced with 'Playing the Game' in the Broadway version. It was also part of the reason the producers would not allow any child under the age of three into the theatre during its London run and stated that the show was meant for children age 7 and up.
- And besides the fact that it's scary, you should also take into account that once the song is over, it is NEVER reprised.