It is revealed that Timmy Turner was the reason Denzel Crocker lost his fairies and went insane about them, although Cosmo is also to blame by turning on the microphones.
March 15, 1972 is the date that Denzel Crocker lost Cosmo and Wanda as his fairy godparents and became a hunchback, lost most of his hair, and other defects due to being overexposed to the laser used by Jorgen von Strangle to wipe Crocker's memory.
Timmy says, "FAIRY GODPARENTS!" and makes crazy poses like Crocker normally does when he learns that he previously had them.
The reason the Dinklebergs live next door to the Turners is because Mr. Turner took the "For Sale" sign in front of their house and tossed it backwards, causing it to land in the neighboring house in which the Dinklebergs shortly pulled up and bought.
Crocker's car license plate reads "FAIRIES".
Crocker had an evil babysitter named Vic, who highly resembles Vicky.
Principal Waxelplax was once in love with Crocker until their college years when she found out how crazy he was at his presentation.
It is revealed that Geraldine is the first name of Timmy's principal.
Dinkleberg was once the boyfriend of Mrs. Turner from when they were kids until college when he ended their relationship after he got rich from his pants.
Mr. Turner was once a janitor while in college.
It's revealed that Timmy's hat is pink because Mr. and Mrs. Turner had bought it, along with other girl toys, expecting to have a girl instead of a boy.
Denzel Crocker was considered a hero in Dimmsdale thanks to the help of Cosmo and Wanda as a kid, though he became hated once everyone's mind was wiped.
When 70's Jorgen forbids Timmy and his fairies from ever returning to March 1972, he allows then to visit other months of that year on the proviso they don't interfere with the election of "President McGovern", thus suggesting Timmy (or another god-child) somehow caused that year's presidential election to end in Democratic candidate George McGovern winning instead of Republican candidate Richard Nixon.
This episode also features the predestination paradox as Timmy Turner is the cause of Denzel Crocker losing his fairy godparents while Timmy tried to prevent it, inadvertently revealing his godparents and getting them taken away.
In the beginning of the episode, if you look closely at A.J.'s DNA tracking device, it says that Mr. Crocker is 5’10” tall, weighs 128 pounds, and his hair is "fake".
During his speech as a child, Denzel Crocker claims that he was born in a log cabin. He also revealed that he has always wanted a pony.
In the first episode of Danny Phantom, another cartoon made by Butch Hartman, Jack Fenton says that he was born in a log cabin and he always wanted a pony. This is a reference to this episode.
This reveals that Mr. Turner has been jealous of the Dinklebergs since the 70's.
This reveals that Denzel Crocker used to have Fairy Godparents when he was a child.
This is the first time a device is used to wipe someone's memory, also establishing that when your fairy's existence is revealed, all memory of them is erased.
If Crocker was 10 years old on March 14, 1972, it means that he was born in 1962.
This means that when the episode was released in America in 2003, he is 41 years old.
Men In Black - The way that Jorgen and the fairies in black made Denzel Crocker and the other people forget about fairies is the same way Agent K and Agent J wiped people's memories. The sound effects are also the same.
Flashdance, Michael Sembello - "Wow! She's a maniac, that's for sure!" - Dad says this when Mom is dancing in place, then sits down and water splashes on her. This is in reference to the popular 80s movie "Flashdance". Also, the phrase "She's a maniac" appears in the song "Maniac", which was used in that movie.
Devo - The four guys with the keyboards in red hats that were seen entering the Belinda Carlisle Auditorium are based on the new wave band Devo, particularly in their 1980 Freedom of Choice tour outfits. When Timmy enters 1982, a soundalike version of 'Whip It' by the group is playing. One thing to note is how in this depiction there are 4 members of DEVO, where there were 5 members in reality.
Back to the Future - When Timmy travels to the 80's, you can see a DeLorean leave to time-travel. Also, March 15, the day where Crocker lost his fairy godparents, is also the day where George McFly (one of the main characters of the BTTF Trilogy) was murdered by Biff Tannen (another main character) in the alternate 1973 (also known as "1973A").
March 15 - The date, March 15, is also known as the Ides of March, the date Julius Caesar was assassinated. In Hungary, March 15th is a national holiday.
Motorola - Chet Ubetcha used to be taller, but was made short by the radiation from a bulky 80's cellular phone resembling the Motorola DynaTAC that he was holding next to him.
When Mrs. Crocker was bringing Mr. Crocker a March 15 cake, the background behind her briefly shows the outside, even though the scene is taking place in Mr. Crocker's bedroom.
If you pay attention to Crocker's shadow while he's giving his speech, during the whole thing, his shadow's mouth stays in one position.
Also, Mr. Turner was called "Dad" back then in Father Time!, but in this episode when Timmy calls him that, his Dad does not recognize that name and attempts to correct Timmy with his real one, but is interrupted by a truck.
Since "Father Time!" takes place in 1970 and this takes place in 1972, it is possible that Mr. Turner outgrew the name to the point of not remembering it.
In the 80s scene, some things were non-existent yet, just like the DeLorean of Back In The Future or the music career of Belinda Carlisle.
Timmy: And tomorrow’s March 15. If you guys don’t remember being his fairies then Crocker must’ve done something to lose you forever.
Timmy: Wanda, Kill the power! I have to get Denzel away from that microphone!
Cosmo: What do I do?
Timmy and Wanda: DON'T DO ANYTHING STUPID!
Cosmo: Must...resist...stupidity...impulse... (poofs up jack in the box) Not...resisting...well...!
90's Crocker: (driving his van)I can't wait to get to my first day as a teacher. Where there's a school, there's kids! And where there're kids there're.. FAIRY GODPARENTS!! (he crashes his van on Principal Waxelplax's car)
90's Crocker: Geraldine?!
90's Principal Waxelplax: I'm your boss now! Call me Principal Waxelplax.
80's Crocker: FAIRIES!
Timmy: OMG, Denzel Crocker must have, FAIRLY ODDPARENTS!!!!!
Denzel Crocker: WHY DON'T ANY OF THE THINGS I WISH FOR EVER BECOME REALITY?!
Although this episode premiered in 2003, it was produced in 2002 according to the credits.