It's inexplicable either way. So let's say one day it was just there, the big bang caused a chicken/egg to suddenly appear. Now if you think logically, the egg wouldn't survive without a CHICKEN to take care of it and make it hatch.
So, in fact, it was either two chickens or a chicken AND an egg who came first. I think.
Dude, you're making no sense. We're saying what came FIRST, no one cares if it survived or not (well some would but you understand). We know the egg came from the chicken but the chicken came from the egg whilst the egg came from the chicken and you get the whole point.
And at your last comment: Explain?