[izFlat?]

Okay, I started hearing about TFES on various websites and I was like what?! That's insane! Now I'm like starting to believe it. I don't trust NASA anyways, so I don't find this too unbelievable.

My question though:

Why is the center of the earth frozen? If the earth is flat, what would cause it to be so cold?

[Charming Anarchist]

Center?  What do you mean by "center" of the earth?  Do you mean the North Pole?

If you mean the North Pole = Center Of The Earth then the answer is simple:  the sun's rays never come close enough to heat things up beyond what seems "cold" to you. 
The same reason why the Antarctic perimeter is "cold" and why it gets "cold" at night anywhere on this planet.   

[Disgraced_Shield]

I don't trust NASA anyways, so I don't find this too unbelievable.

Why? I'd be interested to know the basis for your mistrust.