rotten egg

a wild goose never laid a tame egg

Most things are inherited and predetermined.

bad egg

Someone whose behaviour is reprehensible or irresponsible; a rogue.

Borrow and beg

[Cockney slang]egg

A term that enjoyed a fresh lease of life during the second world war and the food-rationing period.

curate's egg

A thing which has good and bad parts, but is overall spoiled by the bad.

egg on

To encourage or coax (a person) to do something, especially something foolhardy or reckless.

good egg

A good person, someone to be trusted; a friend.

lay an egg

To produce a failure or flop; to do something which is unsuccessful.

rotten apple

A bad person, especially one who has a corrupting influence on others.