The exact recording behind Omg Its Wezzer has no confirmed public source, so its history is really the history of its use as a shareable soundboard clip. Short excited announcement sounds like this spread through meme pages, Discord servers and short video edits because they work without any context beyond the shout itself. This one stays in rotation as a niche fan joke, pulled out whenever Weezer is mentioned, a similar sounding name appears, or a creator wants a tiny moment to feel like a major celebrity reveal.