A video link showing a man cracking open an egg, only to find another egg inside has been floating around the internet. It has been the subject of much virtual debate: Is the video a hoax, or is this a possible occurrence?
This is a possible occurrence. The same chain of events that causes internal laying, (that is, a fully shelled egg works its way UP the oviduct, rather than down and out) causes a shelled egg to re-enter the shell gland and receive a second shell. This super-sized egg is then passed out of the body.
For more on this, check out this video.
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