You ever watched the movie The Human Centipede?
That's basically how memes work. Memes are first created on 4Chan before they are shat out into Reddit's mouth where they gain traction before they are once again shat out onto YouTube, Twitter (sorry, X), Facebook and finally dropping down into the final sewer that is Imgflip.
It's all one big pyramid scheme. One big bowl movement. That's why it's called shitposting.
It's just the circle of life. Hakunah Matata!