'SDIYBT' And Other Slang You Should Learn

Author

Know Your Meme Team
July 21, 2025

This week, Jet2 Holidays took over social media, S Lines became a big trend on TikTok, Star Wars< fans brought "clankers" to the mainstream lexicon and more.

Astronomer CEO Andy Byron's Affair at Coldplay Concert, also known as CEO and Head of HR Caught Cheating On Jumbotron, refers to a viral video of a man purported to be Astronomer CEO Andy Byron, caught on the jumbotron with his arms around the company's Chief People Officer (HR) Kristin Cabot at a Coldplay concert, the two hiding their faces once they realize they're on the screen. In the video, Coldplay frontman Chris Martin jokes that they are having an affair based on their reaction. The video was posted online in mid-July 2025, with people uncovering their identities and beginning to claim that they actually were having an affair with one another. The viral video rapidly inspired numerous reactions and memes online as it spread.

Elmo Twitter Hacked and Antisemitic Elmo refer to a series of antisemitic and offensive tweets posted by the official Elmo Twitter / X account for the Sesame Street character on July 13th, 2025. The posts inspired numerous reactions and memes over the following days that portrayed Elmo as being antisemitic and generally holding controversial beliefs. On July 15th, a representative of the Elmo X account and Sesame Street posted a response to Elmo's page, condeming the antisemitic tweets.

SDIYBT is a catchphrase and slang acronym for Start Digging In Yo Butt, Twin, a reference to the Digging in Yo Butt meme that was popularized online in late June and July 2025. The acronym was popularized in mid-July 2025 after an edit of a SpongeBob SquarePants scene in which a robotic version of SpongeBob tells Plankton, "Start digging in yo butt, twin," was posted on TikTok. The acronym quickly began to spread as a slang term and meme, inspiring animations, lip dubs and more. The term also spread to Instagram that month, inspiring similar videos and image macros.

Where Are They Now? Here's A Look At What Joe Cirkiel, The 'Have You Ever Had A Dream Like This' Kid, Has Been Up To Since He Went Viral

It's been 26 years since people first saw the stuttering "Dream Kid" in the Turner Classic Movies tape Goodnight Moon and Other Sleepytime Tales. Here's what he's up to these days.

Upcoming Meme-a-versaries

Here are this week's birthday memes celebrating their anniversaries from the storied halls of meme and internet history:

The Latest Videos

Everyone's Obsessed With This Anime Horse Game

Uma Musume: Pretty Derby is a racing simulator where anime girls are the reincarnations of real-life Japanese racehorses, and it just exploded in popularity. Originally launched as an anime and mobile game in Japan, it combines gacha mechanics, idol culture, and high-speed horse racing, with players training their favorite "horse girls" for victory. After finally releasing in English in June 2025, the game quickly went viral on TikTok and Twitch, spawning fan art, memes, and bizarre streamer moments—including one where a player spanks himself mid-race like a jockey. From "Skibidi Rizz" memes to VTubers galloping in real life, Uma Musume is the internet’s new obsession.

Septum Theory Is Insane

A wave of discourse is taking over social media, and it’s all centered on one accessory: the septum ring. “Septum Theory” started as a joke about people with nose piercings having chaotic or toxic personalities, but it’s evolved into something deeper. From memes to YouTube commentary, the theory has been used to stereotype pierced individuals, particularly women, as radical feminists or emotionally unstable. While some defend the trend as observational humor, others see it as thinly veiled misogyny. As pierced creators fight back, the debate around Septum Theory reveals how online culture continues to pathologize appearance, one facial piercing at a time.

CEO Caught Cheating on Jumbotron at Coldplay Concert Is Wild

At a recent Coldplay concert in Boston, a seemingly innocent moment on the jumbotron turned into a full-blown cheating scandal when a couple awkwardly tried to hide from the camera. The clip instantly went viral, and online sleuths quickly alleged that the man was Astronomer.io CEO Andy Byron, who is married, but not to the woman he was hugging. Since then, the video has exploded across TikTok, Reddit, and Twitter, turning into a massive meme and possibly even leading to the end of a marriage.