The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza let alone cooking it.
At the age of 11 I was about 6 ft. tall and my voice had completely broken. That caused problems. I was this gangly spotty very unattractive kid. I wasn't cool and I wasn't a nerd. I didn't even want to fit in with anyone.
