Actually there is a saying of "he is a good egg" to be found in dictionary undesignedly.

实际上，有一种俗称“他是个好鸡蛋”的说法是在字典中无意发现的。

youdao

He is a good egg and will lend you some money.

他是个好人，会借钱给你。

youdao

Thanks for buying me lunch; you really are a good egg.

谢谢为我买午餐，你真是个大好人。

youdao

But Mom was a good egg.

NEWYORKER: Tenth of December

Dr Nigel Higson, a Sussex GP and member of the Primary Care Virology Group, said that while the incidence of severe egg allergy was "miniscule", moving away from egg-based vaccines was a good idea.

BBC: Flu jab could beat allergies

Assuming there is a comfortable nest egg, for a single person in good health, it makes sense these days to defer taking Social Security until age 70, says Mr. Jones.

WSJ: It's Never Too Soon to Start Planning Your Retirement