Turducken, hah! Here's an ancient eastern recipe I came across on the internet that puts it to shame.
60 shelled hard-boiled eggs, stuffed into 20 chickens, stuffed into one lamb, stuffed into one camel. Roast until done and enjoy.
If a camel is not available, a water buffalo may be substituted, although there will be changes in the resultant flavour.
By Bill Kummer