* The pure terrified reactions of the people who play Slender are pretty hilarious.
** [[Film/TheDarkKnightRises Bane]] [[http://www.youtube.com/watch?v=WOXCdSMaNeE playing Slender deserves special mention.]]
** [[http://www.youtube.com/watch?v=aXwkfSmYkf4 11 Drunk guys play Slender.]]
*** [[NightmareRetardant "Surprise,]] [[Series/{{Dexter}} motherfucker!"]]
*** "WHAT TWISTED SOUL MADE THIS GAME?!"
*** [[TemptingFate "He was Goddamn close there, I'll tell you that."]]
*** "Why don't we have a GUN? We need to shoot him!"
*** "[[DontGoInTheWoods Who goes to the park]] and [[CrazyPrepared doesn't bring a weapon?!]] [[GenreSavvy WHAT KIND OF PARK IS SAFE AT NIGHT?!"]]
*** Their abhorrence to chairs.
** Michael (AKA Rage Quit) and Gavin from RoosterTeeth [[http://www.youtube.com/watch?v=uvYrA9rCjy4 play Slender.]] The "behind the scenes" [[http://www.youtube.com/watch?v=l_TCWMoesGo face cam video]] is even funnier.
** Happy Waffle Gaming actually does these games as '''''VERSUS!''''' HilarityEnsues, like [[http://www.youtube.com/watch?v=cje4Ng8lDdY&feature=relmfu this gem of a episode]] at 2:10 when Son and Slender have a casual conversation during the chase.
** [[WesternAnimation/AdventureTime Lemongrab]] playing Slender. [[http://www.youtube.com/watch?v=VhM9xwhDnwI His noises and incoherent babbling are perfect]]. The guy's impression of LG's voice is impressive to say the least.
** [[http://www.youtube.com/watch?v=4OrHIOyNBjQ The mighty Alfabusa also played Slender.]] [[CrowningMomentOfAwesome AND MADE THE SLENDERMAN FEAR]] ''[[MomentOfAwesome HIM]]''.
--> "FUCK YOU SLENDER-FAGGOT! GRRAAAAAGHHH!!! FOR THE EMPEROR!!!"
--> "It says, "can't run". Well, I can run, thank you. What I ''cannot'' do, however, is not be drunk."
** [[{{Toonami}} TOM 3.5's]] [[http://www.youtube.com/watch?v=YoZQ0U1L0wM review]] of Slender... or rather, his attempt at reviewing it.
--> "Toonami doesn't even know what to give Slender."
* $20 Mode. Simple as that...
* [[Creator/LittleKuriboh Marik]] [[http://blip.tv/yugioh-the-abridged-series/marik-plays-slender-6359133 Plays]] Slender.
-->'''Bakura:''' Marik, maybe you should just give him twenty quid or something.
-->'''Marik:''' You mean twenty dollars, Bakura! He's not frigging British.
-->'''Bakura:''' How do you know?
-->'''Marik:''' Last time I checked, British people don't have tentacles!
-->'''Bakura:''' You clearly haven't met the royal family.
** All of Marik's "Trapped in the [x], better drink my own piss!"
** Giving Slendy a ridiculous Tristan-esque voice and a goofy yet scary personality.
** The first time Marik and Bakura encounter Slendy is hysterical.
** "I [=JusT WaNted tO HeLp You sIng mY TheMe sONG=]."
*** " I [=JusT WaNted tO InForm You that I'lL Be KilLing You In AbOut Ten SecOnds=]."
**** (''[[JumpScare Ten seconds later]]'') ''''''[[VoiceOfTheLegion "HEEEEEEEEYYYYYYYYY GUUUUUUUUYYYYYYYYSSSSSS!!!!!"]]'''''
* [[http://www.youtube.com/watch?v=Xtkrf1oKGwI This]] WebVideo/{{Retsupurae}}: Trouble with the Law? Better call Saul (Slendamann).
* [[LetsPlay/{{Supergreatfriend}} Supergreatfriend's]] [[http://www.youtube.com/watch?v=Pra0LzuprhQ let's play of Slender]] features hilariously effective NightmareRetardant: A ScareCam of ''DwayneJohnson.''
* [[http://youtu.be/dBxGFpUjMk4 Two Best Friends Play Slender]] is particularly hilarious because of the best friends' complete opposite reactions to the game. Pat is utterly terrified while Matt is convinced he can run up and punch Slender Man in the face (or lack thereof).
** Even better is that, by the time they get round to playing VideoGame/SlenderTheArrival, Matt had watched MarbleHornets and suddenly he wasn't so brave anymore.
* [[http://www.youtube.com/watch?v=WyonDDHb2wg Eliphas, Araghast, Carron and Crull play Slender.]] That's right, four of the Chaos Lords from DawnOfWar match wits with Slenderman [[spoiler:and are defeated by a chair]].
* In the prologue section of The Arrival, if you go down the slide in the garden a message pops up on screen saying "Achievement: Going down a slide in a horror game"
* The "secret levels" in the Arrival are pretty amusing, considering you're basically playing a friendly game of hide-and-seek with Slendy
* Ian and Anthony of WebVideo/{{Smosh}} fame play Slender.
-->'''Slenderman, come rescue us!'''
* TFSTwoSaiyansPlay's [[http://www.youtube.com/watch?v=96Nfeniqeow Vegeta Makes Krillin Play Slender the Arrival]], freaking hilarious.
* [[https://www.youtube.com/watch?v=siYitV6S5_I SLENDER Shotgun Mode!]] BAM!