This is the first time I’ve ever encountered this phrase： [noun+ のたまご」
I encountered it in the Level 8 vocabulary for 医大. The example sentence is this:
I pretended to be a med student and snuck into med school to find a future doctor boyfriend.
So does 医者のたまご mean someone who has yet to hatch (from an egg?) as a doctor? And if I said something like, "弟は工作者のたまごです” would I not sound completely silly?