This episode features flash-backs from the Season 1 episode "Paternal Egg-Stinct".
Original International Air Dates:
Czech Republic: June 25, 2011 on TV Nova
The shirt King Julien shows in this episode has a slight resemblance to the New Zealand Music May Month shirts that are in stores every May in New Zealand, run by the New Zealand Music Commission that takes place every May.
Title: "Hard Boiled Eggy"
The title of this episode could be a pun on boiled eggs.