History Fridge / TheGrimAdventuresOfBillyAndMandy

* Mandy smiling causing the universe and reality to fall apart obviously seems to be a case of Flanderization, but it should also be considered (given that Mandy could smile in early episodes) that maybe the key is that Mandy can smile only when ''she wants'' to smile. It's just trying to ''force'' her to smile against her will that causes universal collapse.

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* Gladys is often shown to be [[DoubleStandardAbuseFemaleOnMale physically abusive to]] Harold. Does Billy tolerate Mandy's physical abuse because he's stupid, or has he grown up thinking [[ConditionedToAcceptHorror that this sort of violence is normal]]?
* Also in "The Halls of Time", Irwin finds his older brother's hourglass and shuffles the sand around as revenge. He then tosses it offscreen, where a crash is heard. [[ChuckCunninghamSyndrome Irwin's brother is never mentioned again in the series.]]
** [[RetGone He was never in the series.]]
** In the same episode, Grim, Mandy, Billy, and Irwin regress into babies and disappear because their hourglasses were turned upside down. Earlier on in the episode, Billy "saves" his dad's life by turning his hourglass upside down as well.
* FridgeLogic - In canon. Irwin's dad explains how he met and fell in love with Irwin's mom, who happens to be a mummy.

* In the video game, the announcer is voiced by Music/WeirdAlYankovic. Kind of weird when you figure [[TalkingToHimself he was also]] [[ActingForTwo the Squid Hat]]... Until you remember that the Squid Hat didn't appear in the game, and we don't know the actual identity of the announcer. [[WebVideo/GameTheory Coincidence? I think]] ''[[WebVideo/GameTheory NOT!]]''

* Kind of a FridgeHorror[=/=]FunnyAneurysmMoment, but here goes: We know that Mandy probably hates [[DoggedNiceGuy Irwin]] more than any other kid in Endsville, right? One could chalk that up to his crush on her, but that doesn't explain why she's not above hurting him when he ''hasn't done anything''. For example, she mentions punching Irwin in the face in "Complete and Utter Chaos", but he doesn't show up until the very end, doesn't say a word, and the only character who interacts with him is Eris. So... Why does she have so much animosity towards him? Well, the the ChristmasEpisode, she states that she [[FantasticRacism hates vampires]], which is her main reason for saving Christmas. Later we learn that ''Irwin'' is a vampire (or a {{Dhampyr}}, rather), so maybe she was starting to figure out what Irwin ''really'' was.

* In the episode "Billy Gets an A", Billy using the scythe's magic to change the grade on his exam somehow creating a BizarroUniverse, which affected all but Grim and Mandy. Initially, I thought the lack of change was to give Grim someone else to snark with. However, it wasn't until later that I realized that Mandy had ''already'' manipulated her bizarro-self into being just like her in an earlier episode. -@/{{Pinkbaron}}
** Besides, I'm pretty sure Mandy is just too powerful for that.

* At the end of the episode with the wishing skull, the skull, Thronambular, grants Grim's wish for both to be free of the respective bargains. Thronambular screws Grim over, leaving him trapped as a skull forced to grant 8 more wishes, while Thronambular is free in Grim's body. While the episode ends there with NegativeContinuity, seeing as Thronambular now has to put up with Billy and Mandy, it's not unreasonable to assume he couldn't take it, and wished him and Grim back to their respective positions.

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* Yogi and Boo-Boo being afraid of caves just seems like a joke. However, brown bears really ''are'' afraid of caves.

** Yes, we saw the episode. We know what happened.

* At first, [[TheyKilledKenny the character's continual deaths]] seem a sign of NegativeContinuity. Until you realise that ''they have the Grim Reaper under total control.'' The being responsible for death itself! Grim has to keep them from staying dead in order to fufill his end of the bargain, or bring people back to life when Billy and Mandy wish it. Even when he is killed off, he's fine since it's impossible to kill death.

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* Where, exactly, did the joke about the Elvira expy's show [[ChristmasCake getting cancelled when she turned 30]] come from? The real Elvira's a senior citizen and still going (though the fact that [[OlderThanTheyLook she still barely looks 40]] probably helps).
* In "The Halls of Time" the kids and Grim age backwards when Billy and Irwin put their hourglasses back where they found them upside down. Grim was affected even though Mandy, Grim and Father Time found Billy and Irwin before the two could do anything to Grim's hourglass, and they couldn't even flip it over anyway because it was too large (if they tried anyway, the hourglass would've broken upon hitting the floor and Grim would've been {{Ret Gon|e}}ned).
** If I recall correctly, they did it off-screen.I mean, we see them flip more than few hourglases while Grim was talking to Father Time and then they caught up to them.

* Irwin's crush on Mandy may not be as [[MadLove insane]] as one thinks. In the early episode "Get Outta My Head!", Billy (in Mandy's mind) flirts with Irwin. But before that, Irwin seemed to ''fear'' Mandy, just like most other people. He probably didn't realize that Mandy wasn't actually flirting with him, which caused him to believe that Mandy likes him but is acting (rather abusively and unhealthily) {{Tsundere}} towards him.