We have had "naked" eggs where the hard shell has not formed around the egg and the egg feels like a partially inflated beach ball.
We have had a number of "double" yolks.
We have had green eggs, purple eggs, brown eggs...etc.
But...I have to say this was the top it all. I even asked a couple I know with a very large chicken farming operation about this and they reported NEVER having had such an anomoly.
So...what is it you ask? Well, my daughter was very proud of the double yolker she brought in from the barn. Just look at this thing and you can tell it will be amazing as a complete two fried egg breakfast all wrapped up in one.