Where to buy retired egg?

Excuse me, I couldn't help but notice your mention of "retired egg." Could you please clarify what you mean by that? Is this some sort of slang or jargon related to a specific industry or community? As far as I'm aware, the term "retired egg" isn't a common one in the world of finance or cryptocurrency. Perhaps you're referring to a specific type of investment or collectible? If so, could you elaborate on what it is and where one might go to purchase it? Thank you for your time and I look forward to hearing more.