Our Dora laid a humungous egg the other day. It was the biggest hen's egg I've ever seen - much bigger than the double yolkers we're had periodically. We wondered if it was a triple yolker (if such a thing exists). Anyway, when we cracked it there was a completely intact and normal sized shelled egg inside it! I looked up what can cause this and found that it's caused by a counter peristalsis contraction. BUT it says that you get two yolks, one in the big egg and one in the normal egg. We didn't have this as the big egg only contained the complete egg and egg white. Anyone else had this?