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For anyone who's been living in a cave for the past decade, Supa Hot Fire is the online alter-ego of YouTuber DeShawn Raw, who featured in a number of battle rap videos on YouTube.
The most famous includes a short scene in which Supa Hot Fire is battling among a crowd, saying to his opponent: "I broke up with my ex-girl. Here's her number."
He then hands his rival a piece of paper, before saying: "SIKE! THAT'S THE WRONG NUMBER!"
As people around him cheer, Supa Hot Fire casually turns to the camera, while his friend clutches his face in exaggerated shock.
Those few seconds of reaction are what became one of the world's most famous memes, with internet users dishing out screengrabs or GIFs to express themselves - having essentially become a means of saying, 'Oh no she DIDN'T!'
According to KnowYourMeme, the original 'The Rap Battle (Parody)' video was posted on 25 May 2011 by DeShawn Raw.
It was deleted from the platform but was reuploaded in 2013, and has since gone on to garner more than nine million views.
The YouTuber continued to post many more satirical rap battles, with the fans 'highly favouring' him over his opponents.
Other clips also saw Supa Hot Fire battling various other rappers, which - as the character's fame grew - went on to include some pretty huge names, such as Soulja Boy, Chris Rock and Timothy DeLaGhetto.
KnowYourMeme explains: "The videos widely circulated around the internet, inspiring various parodies.
"In February 2019, a screen capture from the original video was circulated as an image background, captioned with 'I'm about to end this man's whole career', in reference to situations in which one's reputation or social status can be harmed.
"This just goes to show that memes like this one remain relevant for years, and though the original Supa Hot video is now over a decade old, it still remains an iconic piece of internet meme history."
Fellow YouTuber WavyWebSurf said in a 2020 video that the reaction is 'one of the biggest GIFs of all time that people still share today'.
However, he added that in recent years, DeShawn Raw's 'relevance' on YouTube has 'significantly dwindled'.
The star has since launched a brand new YouTube channel called TheCareerOfSupaHotFire, which has more than 32,000 subscribers since debuting in February 2020.
Last month, he released a new video, SupaHotFire Vs DaBaby, which has had more than one million views.
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