What is the Cloning glitch?

Question

I have recently heard of the cloning glitch. how does it work? (video please)

Answer 1

Heres a video, Though Idk if it cusses or not, I just pulled it out of the internet...
It depends on what game you are using...

http://www.youtube.com/watch?v=ZRzzGBdV7bQ

Comments

I found out it doesnt talk at all, so our're good.