multimedia message phenomenon

[u/Melodic-Bison-486]

https://youtu.be/r4lgPRjukiw?si=MJ_NnIlsxZOk1JoK

when searching multimedia message I found a lot of weird random videos (I even found the og oh yeah Mr krabs) I really want to dig in to this rabbit hole but I don't know where to start if anyone can help it would be appreciated