It is revealed that male fairies are the ones who get pregnant (not the female fairies) and it will last for three months. That means Papa Cosmo gave birth to Cosmo and Wanda's father, Big Daddy, gave birth to her and her twin sister, Blonda.
Apparently there were supposed to be no more fairy babies after Cosmo was born because of what he did when he was a baby. However, Timmy still got to wish up one because Jorgen forgot to officially put that rule in Da Rules since it was on a sticky note.
Timmy suggests the name Tommy as a name for the baby who would be known as Poof. This name and Tommy Turner (wish) is evidence that he had the name of his future son before he was even born.
In Latin America, Cosmo's voice was changed, due to his voice actor, Segio Sáez, had moved to Chicago, United States, being replaced by Orlando Noguera, which is the current voice of Cosmo, Chet Ubetcha and other characters in the Latin American Spanish version of The Fairly OddParents. Orlando Noguera was the narrator in the first season of the Latin American Spanish version of SpongeBob SquarePants and additional voices in South Park, since the season 10 of that series and also dubbed Stan Marsh and Butters Stotch since season 16.
Domino' Pizza - Cosmo stated that if he doesn't deliver the orders before 30 minutes, they are free. This was a system Domino's used during 1980s-1990s.
Kajagoogoo - Jorgen wants to name the baby Kajagoogoo in honor of the British new wave band.
Ghostbusters - Chet Ubetcha says, "Dogs and Cats living together...It's mass hysteria." This is a reference to the Ghostbusters line, "Human sacrifice, dogs and cats living together... mass hysteria!".
In this episode, it is repeatedly stated that Cosmo was the last fairy baby born, yet there have been younger fairies shown both before this special and after (Timmy TV).
Jorgen Von Strangle does not know Poof is still with Cosmo and Wanda at the end of the episode, but in "Poof's Playdate", he seems to be aware though this was probably off-screen.
All throughout the episode, Anti-Cosmo's eyes appear green, as they should be, but in the end when Anti-Cosmo is a raisin (along with H.P.), his eyes appear red.
When Cosmo appears as baby, he looks like a smaller version of a fairy, but Poof was born round. In a later episodes, when baby fairies appear, they are round.
In the episode, Poof's skin is the same skin color of Cosmo, Wanda, and Timmy. In other episodes, his skin looks whiter.
When Jorgen is reading off of Da Rules, one of the rules he says is not turning yourself into a fairy, but in the episode, A Mile In My Shoes, Timmy turns himself into a fairy. This might suggest that was Timmy's wish that gave rise to this rule, Timmy also turns himself into a fairy godmother in Elmerella. Cosmo and Sheen also broke this rule in When Nerds Collide by having Cosmo make Sheen a fairy, so it could be likely that this event gave rise to the rule due to Sheen abusing a fairy's magical powers to anger Jorgen.
In this episode, Jorgen Von Strangle appears to have had long purple hair in his younger days (it was also shown in The Secret Origin of Denzel Crocker). But when he was shown as a baby in "Poof's Playdate", he has his usual white-haired buzz cut. However, the former two appearances were when he was an adult, so the white hair may be his natural hair color. In the flashback shown in this episode, it is possible he dyed his hair and made it longer so he could make a good impression on Cosmo since the latter was a baby at that point. The purple hair afro shown in The Secret Origin of Denzel Crocker may have been done by him because he wanted to be able to blend in with the 60s era more easily since his regular white hair buzz-cut would probably make him stick out like a sore thumb there at that point.
Before Timmy threw the burrito into Poof's mouth, Poof was floating next to Cosmo. But when Timmy threw the burrito, Poof was far over in the corner of the room. Then, when he started to break wind, he was back over where he originally was.
For a brief moment, when Timmy wishes for Cosmo and Wanda to have a baby, he has no buckteeth.
Jorgen says that Cosmo and Wanda could visit their baby every other millennium, which is 2000 years. However, he marked down their next visit in the 23rd century, which is only 200 years.
After Anti-Cosmo says, "World Domination!", the agenda that he has never appears again.
Cosmo and Wanda explain that the reason that Fairies have godchildren is because Fairies cannot have children. However, later, Wanda says that it is an ancient tradition to have the godchild throws the pregnant fairy a baby shower.
Cosmo barfing on Timmy and apologizing.
Cosmo yelling at Timmy due to his mood swings.
Cosmo asking people if they want jelly.
Characters saying, "it has the new baby smell."
Jorgen going to the restroom because of a bad burrito.
Characters wanting to know the gender of Poof. Characters will also often follow up with "no time for that!".
People referring to the term "baby" as the "B" word.
Poof causing something weird to happen depending on his reactions.
Prior to his official name, everyone (except Timmy) gives Poof a different name.
Timmy using cute baby talk on Poof to keep him happy and Timmy making a note in the same voice on how he has to eventually stop.
Jorgen mistaking the Poof doll for the real Poof.
A person will say they want to go outside where the light is better.
Timmy attempting to skydive and then falling when Cosmo and Wanda leave him to look at babies.
Someone saying you can't just _________, can you?
People calling Timmy, Tommy.
Prior to the premiering of this episode, some fans did not like that Fairly OddParents would be having a new main cast member. Most of those fans have come around after the episode aired and/or by the time the week of new episodes following this one was finished.
One thing that some fans didn't like was that it showed that Poofs gender was determined on whether or not he liked water squirters. The reason the fans didn't like this was because it suggests that females can't like water squirters.
It wasn't until a little less than 1 year and 5 months later that his true gender was revealed in the episode, Anti-Poof with Foop with a male voice and not a female voice. Revealing that Poof is indeed a male.