Seriously asking? Not an oil thread, not a tire thread. The answer is absolute and simple.
People somehow forget that the chicken and the egg are the same goddamned thing.
When we talk about an egg, we are merely talking about a chicken in it's embryonic state. The first chicken was just a chicken. When it was an egg, and when it was a chick, and when it was a chicken, and when it was dinner. That same #$%*ing chicken was all of those. You cant say either came first, because those two words are merely words for different stages of the same entity.