This is one of the few episodes where Vicky isn't the one who babysits Timmy.
This episode reveals how Timmy got his buck teeth in the first place. It was because Pappy unintentionally let Timmy suck on his pacifier too long as he forgot momentarily where he was.
Cosmo and Wanda appear in their standard forms in the title card, even though they never assume them in the actual episode.
This episode was ranked #14 in the "100 Greatest Nicktoons Episode" countdown.
Pappy was born in the 1930s, so that means he's somewhere in his Eighties. Also, he has a vast amount of knowledge on old cartoons, since he tells Timmy about lots of things that normally happened in old cartoons.
This is the 4th title card to appear in black and white.
In the 1930s, a dollar would be equivalent to nowadays $10 dollars; meaning that Timmy's $20 bucks are equivalent to nowadays $200 dollars.
Instead of “The Fairly OddParents in:”, it was “A Fairly OddParents Cartoon” on the title card.
The Good Old Days! - The title refers to a cliché in popular culture, meaning that an era of an old character was better than the current one.
As well as Pappy's contradiction to everything Timmy does is worse than things he will do in his era.
Ub Iwerks - In the old cartoon world, an intersection of two streets are named "Ube" and "Iwerks," a reference to the famous animator who spent most of his career working for Walt Disney and developed famous "Disney-style" pictures.
Steamboat Willie - The 1930s version of Dimmsdale is a reference to the old Mickey Mouse cartoon.
Looney Tunes - Cosmo and Wanda's "old cartoon" appearance is similar to Foxy and Roxy, a pair of cartoon foxes that appeared in the 1930s.
When Timmy wished for everything to not be cartoon-related anymore, a POOF! sign appears saying "So Long, Folks". This bears a striking reference of the famous and classic Merrie Melodies/Looney Tunes closing slogan, "That's All, Folks!".
Goofy — The wands faces and the sounds they’re making is similar to Goofy from the Mickey Mouse cartoons.
Vicky could just turn the lever for the buzz saw on fast instead of slow.