A penguin jumping.
Also as fast as the big bang theory came into existence from evidence gathered by hubble and the findings of red phase shift it's falling just as quickly the more the hubble finds uniformity among the light barrier (the hunt for the direction of the blast by finding concentrations of older galaxies and radiation vs sparsity on the opposite side). Imagine being a piece of shrapnel in the midst of a grenade blast and looking out as far as you can and trying to find what direction the blast originated from. The theory that the big bang happened within 18.9b years ago is already toast considering it was based on the likelihood that matter can't travel faster than light. If that was true then we would be able to see the big bang actually happening within our lightverse and the speed at which light travels. Our lightverse is 18.9b light years; thats where the number came from. Since we can't see it, then matter at one point did travel faster than light, or there was no singularity. Accepting the former a lot of astronomers are completely switching to the theory of inflation, others are accepting a common ground of the two theories, the rest aren't holding their breathes. Likewise, if you have any understanding of the big bang theory you'll know it's not the theory of the beginning of existence. It's defined as the theory of what happened immediately after the beginning of existence itself, not before existence, not existence, but after and beyond. So to say its obvious that there was nothing before the big bang is going against its own definition. Obviously there was something whether it was a singularity or some antimatter colliding. Something was there, and probably even something that created that. So on and so forth.
Sorry had to clear that up.