* CrossesTheLineTwice: A lot of the articles can border on this.
* HoYay: Between the admins. Lots of it.
* MisaimedFandom: Like Urban Dictionary, the site is not an actual encyclopedia or honest source of info, intending humor and satire. 99% of the 'information' is a lie, exaggeration, or obvious parody. However, some people still trust everything the site says even though the admins make obvious it's not really supposed to be taken so seriously.
** [[http://uncyclopedia.wikia.com/wiki/Uncyclopedia:In-Jokes Complete List Of Uncyclopedia In-Jokes.]] It's one of the few factual pages on the site.
** Within the spanish version, [[http://inciclopedia.wikia.com/Tio1.jpg Tio1.jpg]], and [[Literature/DonQuixote Miguel de Cervantes]] instead of Creator/OscarWilde.
* NightmareFuel: Some of the articles and jokes are ''grossly'' inappropriate.
* {{Squick}}: Some of their articles have this.
** The worse parts of the Polish version's [[http://nonsensopedia.wikia.com/wiki/Gra:Gra The Game]] feature this, crossing over with RuleOfFun.
*** "[[http://nonsensopedia.wikia.com/wiki/Gra:Strona_0,05 Ew]], how could you? You [[ExtremeOmnisexual toothbrushphile]]! [[PaedoHunt This toothbrush isn't even 18 years old yet!]]"[[note]]One of the choices in The Game. The choice leading to this says: "If you want to take a closer look at the toothbrush, go to Page 0.05." The only choices on this page are to [[PressXToDie die]], [[SchmuckBait win The Game]], which leads to the [[WhatAnIdiot mocking]] [[http://nonsensopedia.wikia.com/wiki/Gra:Strona_0,0009 Page 0.0009]], or to indirectly go to {{Hell}}.[[/note]]
*** "[[http://nonsensopedia.wikia.com/wiki/Gra:Strona_87 You've been]] [[https://en.wikipedia.org/Phagocytosis phagocytosed]] by [-([[BlatantLies The Game's protagonist]])-] the feral elephant with cheese for a head."[[note]]One of the multiple death pages. Complete with a well-made illustration of the weird elephant.[[/note]]
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