everything is a copy, and is usually used popularly throughout the world. another way this quote can be used is to refer to fight club, where the narrator uses it in a popular scene, making it a famous quote.
everything's a copy of a copy of a copy -narrator, FC
person 1: hey man i just watched fight club! oh well I'm not supposed to talk about it arent I?
p 2: haha! everything is a copy of a copy of a copy ain't it?
1: good reference. you met me at a very strange time at my life :)