Ugandan Knuckles is a VRChat meme built around a distorted 3D model of Knuckles the Echidna from the Sonic the Hedgehog franchise. Players swarmed virtual lobbies using the avatar while repeating "Do you know de wey?" in a mock African accent, creating one of the most viral and controversial gaming memes of early 2018. The meme sparked a major debate about racial stereotyping in online spaces and drew comparisons to Pepe the Frog's trajectory from harmless joke to co-opted symbol.

Pepe the Frog is a cartoon frog character created by artist Matt Furie for his 2005 comic *Boy's Club*, best known for his catchphrase "feels good man." After 4chan users turned Pepe into one of the internet's most versatile reaction images in 2008, the character exploded into mainstream culture before being co-opted by alt-right groups during the 2016 U.S. presidential election, leading the Anti-Defamation League to add him to its hate symbol database. Pepe's story is one of the most complex in meme history: an innocent stoner frog that became a political flashpoint, a legal battleground, and a global protest symbol.

Keyboard Cat is a viral video meme featuring an orange tabby cat named Fatso, filmed in 1984 by performance artist Charlie Schmidt, appearing to play an electronic keyboard while wearing a blue shirt. The clip sat dormant for over two decades before being uploaded to YouTube in 2007 and exploding into one of the internet's most recognizable memes in 2009, when Brad O'Farrell created the "Play Him Off, Keyboard Cat" mashup format that paired the footage with fail videos as a comedic send-off.

Skibidi Toilet is an animated YouTube series created in February 2023 by DaFuq!?Boom! featuring singing toilets with men's heads battling humanoid figures called CameraHeads. The Source Filmmaker shorts pulled tens of millions of views per episode through 2023 and became a flashpoint in online debates about Gen Alpha media.

Blinking White Guy is a reaction GIF of Drew Scanlon, a video producer at gaming website Giant Bomb, doing a subtle double-take during a 2013 livestream. The clip sat dormant for years before exploding on Twitter in February 2017, becoming one of the most-used GIFs on the internet for expressing disbelief, confusion, or a polite "what the hell?"[3]. Scanlon later used his accidental fame to raise tens of thousands of dollars for multiple sclerosis research[4].

Cat on Roomba is a viral video meme featuring cats sitting or riding on Roomba robotic vacuum cleaners as they move around a room. The format took off in late 2008 when a YouTube video titled "Roomba Driver" showed a cat perched on a moving Roomba, and it became one of the defining cute animal video trends of the late 2000s internet[1]. The meme belongs to the broader "Cats Riding on X" genre, which expanded to include cats riding tortoises, dogs, and other unlikely vehicles.

"All Star" is a 1999 rock song by Smash Mouth that became one of the internet's most enduring memes after its prominent use in the 2001 animated film *Shrek*. The song's iconic opening line, "Somebody once told me," launched thousands of remixes, mashups, covers, and parodies across YouTube, Reddit, and beyond. Written as an anthem for outcasts by guitarist Greg Camp, the track found a second life online in the 2010s through creators like Neil Cicierega and Jon Sudano, and the band themselves leaned into the joke.

Caturday is the internet tradition of posting cat images and LOLcat memes every Saturday. The practice started on 4chan's /b/ board around 2005, spread through communities like LiveJournal and I Can Has Cheezburger, and turned into a weekly internet ritual still observed across social media. The hashtag #Caturday trends on Twitter most weekends, with users sharing photos and memes of their cats[1].