What was the Soulja Boy joke?

Soulja Boy Tell 'Em, born DeAndre Cortez Way, made headlines in April 2010 when, during an interview by N.O.R.E and DJ EFN on the Hot 97 radio station, he claimed to have invented numerous Internet memes, including the term "swag" and even creating the dance featured in the "Crank That (Soulja Boy)" music video released in 2007.

When challenged by N.O.R.E and DJ EFN about the legitimacy of his claims, Soulja Boy, seemingly frustrated, shouted, "You don't know Soulja Boy?!" This moment quickly gained popularity as an Internet meme, often used as a humorous response when questioning someone's knowledge or understanding.