Izzy Bizzy Bangbang 2021 -

To the uninitiated, it is gibberish. To the Gen Z and Gen Alpha internet natives, it is a relic of a very specific moment in the lifecycle of meme culture. But what is "izzy bizzy bangbang 2021"? Where did it come from? And why, even in late 2023 and 2024, does this phrase refuse to die?