History SciFiWritersHave / NoSenseOfMass

*** Cybertron in the ''Film/{{Transformers}}'' film series, when shown in Earth's orbit, is shown to be very large. Given that it appears to be entirely metallic in composition, it would also make it much more massive, even if its outer layers have many hollow areas. This causes problems of its own, as they appear to be teleporting it right on top of the Earth (like, closer than the Moon). Two planet-sized and massed object, that close to each other, would surely rip each other apart. Only a small portion of the planet gets teleported over, but still, you have to wonder what the hell Megatron was thinking. Notably, even the original cartoon gave this a nod; when Cybertron appears in Earth's orbit, it's shown to have catastrophic effects that don't end until it gets put back out.

* ''Franchise/{{Pokemon}}'' can be terrible with Pokémon weights. Sometimes, this is obviously intentional, other times, not so clear. It also really sucks with Pokémon sizes in general, since with a few exceptions, most of them are literally a quarter of the size you'd expect such an animal or object to actually be. Like how three of the Pseudo-Legendary dragons (Dragonite, Salamence and Garchomp) are between 4 and 7 foot tall. Or Tyrantrum, which is apparently an 8-foot tall Tyrannosaurus Rex. Or Kyogre, which is a shrimp compared to its animal basis (4.5 m compared to 5-8 m for real orcas). If they aren't, it's likely they're much bigger than expected; Furret, the fluffy ferret, is 5 feet 11 inches long, Dunsparce, the Pokemon based off of a snake from Japanese folklore, the Tsuchinoko, which are said to be about 80 centimeters at most, is 4'11" long, and Glalie, a floating, demon-shaped ball of ice, is just as big.

* In ''WesternAnimation/RainbowBrite and the Star Stealer'' Spectra is this really big diamond thing that emits light that makes it possible for life to exist. Unfortunately, [[BigBad The Dark Princess]] wants to claim it for herself, [[StupidEvil even though this will kill all life, including her.]] Spectra is implied to be the size of a real planet or star, yet the Princesse's SlaveMooks have managed to cover a significant percentage of its surface area in cable. Also, at the end [[spoiler: The Dark Princess [[TakingYouWithMe tries to ram Spectra and shatter it as a final act of defeated spite.]] assuming Spectra is only as big as Earth, you'd need about 100 zettatons worth of energy to destroy it, and her starship is only about as big as a schoolbus.]]

* One of the many, ''many'' reasons we know ''Loose Change'' is a DocumentaryOfLies is that it runs afoul of this trope. The {{Conspiracy Theorist}}s who wrote it claim that the Twin Towers were destroyed in order to cover up the theft by the government of several hundred billion dollars’ worth of gold that [[BlatantLies purportedly]] was stored in the World Trade Center’s basement. That much gold would be half again as much gold as has been mined in the planet’s whole history. The amount of gold needed to equal the value given would also weigh thousands of tons, meaning even in the chaos following the tower's destruction, it would be a "little" too much to sneak away with.

* One of the many, ''many'' reasons we know ''Loose Change'' is a DocumentaryOfLies is that it runs afoul of this trope. The {{Conspiracy Theorist}}s who wrote it claim that the Twin Towers were destroyed in order to cover up the theft by the government of several hundred billion dollars’ worth of gold that [[BlatantLies purportedly]] was stored in the World Trade Center’s basement. That much gold would be half again as much gold as has been mined in the planet’s whole history.