This age-old question really has a simple answer. Attempts to answer it, however, and attempts to get around implications of the simple answer are often quite convoluted.
What do you think about it?
Egg came first. Because of the DNA changing inside the egg. Scientist used supercomputer to provide proof for this argument. That's why they came up with the answer, egg came first.
and how did the egg came to be?
I think there was an entity that evolved to lay eggs in time.
So the answer is NEITHER came first.