TikTok
The Algorithm That Changed Everything
TikTok did not invent short-form video. Vine had done that and died. TikTok did not invent algorithmically curated feeds. Facebook and YouTube had pioneered that approach years earlier. What TikTok did was combine these elements into something that hadn't existed before: a platform where the algorithm, not your social graph, determined what you saw, and where any creator — regardless of follower count, production quality, or existing fame — could reach millions of people with a single video. This was a genuinely new thing in the meme ecosystem, and it changed everything about how memes were created, spread, and consumed.
TikTok's origins trace back to Musical.ly, a lip-syncing app launched in 2014 that was popular with teenagers. In 2017, Chinese tech company ByteDance acquired Musical.ly and merged it with its own short-video platform, Douyin (known as TikTok internationally). The merged app launched globally in August 2018, and within two years it had become the most downloaded app in the world, surpassing Instagram, YouTube, and Facebook. By the time of the COVID-19 pandemic in 2020, TikTok was not just a social media platform — it was the primary cultural engine of the internet.
The For You Page Revolution
TikTok's central innovation was the For You Page (FYP) — an algorithmically curated feed of content from creators you didn't follow. Unlike Instagram's feed (built around who you followed) or YouTube's homepage (built around your watch history and subscriptions), TikTok's FYP was built entirely around engagement signals: how long you watched, whether you watched again, whether you shared, whether you followed after watching. The algorithm learned your preferences with uncanny speed and served an infinitely scrolling feed of content calibrated to keep you watching.
For meme culture, the FYP was revolutionary. On older platforms, a new creator needed to build a following before their content could reach a wide audience. On TikTok, the algorithm could take a video from an account with zero followers and show it to millions of people if the content was engaging enough. This democratization of distribution meant that memes no longer needed to travel through the traditional pipeline — from niche community to Reddit to Instagram to mainstream. On TikTok, a meme could go from creation to millions of views in hours, with no intermediary platforms required.
The FYP also personalized meme culture in a way that hadn't been possible before. Every user's For You Page was different, shaped by their individual engagement patterns. This meant that TikTok didn't have a single meme culture but millions of overlapping ones, each defined by the algorithmic niche — the "side" of TikTok — that a user inhabited. Straight TikTok, Alt TikTok, Frog TikTok, Cottage Core TikTok, Dark Academia TikTok — these weren't formal communities but algorithmic clusters, groups of users who saw similar content because they engaged with similar things. The memes in each cluster could be completely unknown to users in other clusters, creating a fragmented, multi-layered meme landscape unlike anything that existed on more homogeneous platforms.
Sound as Meme: A New Format
TikTok's most important formal innovation was making sound the primary unit of meme transmission. On earlier platforms, memes were images (4chan, Reddit, Instagram), text (Twitter, Tumblr), or video (YouTube, Vine). On TikTok, the meme was the sound — a snippet of music, a spoken phrase, a sound effect — that could be attached to an infinite variety of videos. When you "used a sound" on TikTok, you were participating in a meme by creating your own visual interpretation of an audio template.
This sound-based meme format was genuinely new. A trending sound might be used in hundreds of thousands of videos, each with different visual content but unified by the same audio. The sound functioned as a format template — like an image macro template on Reddit but more flexible, because the visual component could be anything. A dramatic sound bite from a reality show could be applied to cooking videos, pet videos, workplace scenarios, relationship stories — any situation where the emotional arc of the sound matched the creator's content.
The sound-based format also had massive implications for the music industry. Songs could go viral on TikTok before they were officially released, and a 15-second clip becoming a TikTok sound could generate millions of streams. Fleetwood Mac's "Dreams" surged back onto the charts in 2020 after a TikTok video of a man skateboarding while drinking cranberry juice went viral. Lil Nas X's "Old Town Road" was essentially launched by TikTok before it became the longest-running number-one single in Billboard history. The platform's ability to make any piece of audio into a meme made it the most powerful force in popular music distribution since Spotify.
Duets, Stitches, and Collaborative Meme-Making
TikTok introduced features that made meme creation explicitly collaborative. The Duet function allowed users to place their video side-by-side with another creator's content, enabling reaction videos, call-and-response formats, and chain collaborations where a single original video could spawn an infinite tree of responses. Stitch allowed users to clip and incorporate a portion of someone else's video into their own, creating a format where one person's setup could be married to another person's punchline.
These features formalized something that had been informal on other platforms: the meme as collaborative creation. On Twitter, meme formats spread through imitation. On Reddit, users riffed on templates. But on TikTok, the platform's own tools explicitly enabled and encouraged building on other people's content. A Duet chain could involve dozens of creators, each adding their own layer to an evolving collaborative piece. The result was that memes on TikTok felt more communal and more participatory than on any previous platform.
The Pandemic Accelerant
The COVID-19 pandemic, beginning in early 2020, was the event that transformed TikTok from a popular app into the dominant cultural platform of the era. With billions of people locked down and looking for entertainment, TikTok usage exploded. The platform added hundreds of millions of users in 2020 alone, and an enormous amount of pandemic-era culture was created on, distributed through, and defined by TikTok.
Pandemic TikTok produced its own genre of memes: quarantine challenges, "things I've learned in lockdown" videos, healthcare worker humor, sourdough bread content, and the general aesthetic of bored creativity that defined lockdown life. The platform also became a primary news source for young people during the pandemic, a development that would have significant implications for how information and misinformation spread.
The pandemic also accelerated TikTok's role as a trend-setting machine. Dance challenges like the "Renegade" (created by 14-year-old Jalaiah Harmon, whose authorship was initially uncredited) and the "Savage" challenge became unavoidable cultural moments. These challenges functioned as participatory memes — anyone could do the dance, share their version, and feel connected to a broader cultural phenomenon. The barrier to participation was as low as it had been on Vine, but the potential audience was orders of magnitude larger.
Brainrot and the Acceleration of Meme Culture
By the mid-2020s, TikTok's pace of content consumption had produced a phenomenon that users themselves described as "brainrot" — the feeling of having consumed so much short-form content that your attention span, your sense of humor, and your frame of reference had been fundamentally altered. Brainrot memes were characterized by extreme absurdity, layered irony, and references that were incomprehensible to anyone who hadn't been marinating in TikTok content for months.
The brainrot phenomenon represented the logical endpoint of TikTok's algorithmic acceleration. Memes on the platform cycled so fast that humor had to become more extreme, more absurd, and more referentially dense to stand out. Formats that would have lasted weeks on Reddit lasted days on TikTok. Sounds that were trending on Monday were overplayed by Wednesday. The platform's speed created a kind of humor arms race where the baseline for what was "funny" was constantly being pushed toward greater intensity and greater inscrutability.
The Ban Saga
TikTok's Chinese ownership made it a target of geopolitical tension from its earliest days in the US market. In 2020, the Trump administration attempted to ban TikTok, citing national security concerns about data being shared with the Chinese government. The effort was blocked by courts, but the threat persisted. In 2024, Congress passed legislation requiring ByteDance to divest TikTok's US operations or face a ban — legislation that the Supreme Court upheld in January 2025. The app was briefly unavailable in the US before a temporary extension allowed it to continue operating.
The ban saga itself became an enormous source of meme content. Users created farewell videos, eulogized the platform, migrated en masse to alternatives like RedNote (Xiaohongshu), and memed the absurdity of the US government attempting to ban an app used by 170 million Americans. The potential loss of TikTok prompted a wave of nostalgia content and "best of TikTok" compilations reminiscent of Vine's death — the internet mourning a platform before it was even gone.
Legacy: The New Default
TikTok's impact on meme culture was not incremental but structural. It changed the format (from image to short video), the distribution mechanism (from social graph to algorithm), the creative unit (from visual template to sound), and the speed (from weeks to days). Every major platform was forced to create its own TikTok clone — YouTube Shorts, Instagram Reels, Snapchat Spotlight — and the resulting convergence meant that TikTok's model became the default for how content was created and consumed across the entire internet. For better or worse, TikTok didn't just participate in meme culture — it redefined what meme culture was.