bad egg

Rather bright and so forth, but in its proper place not altogether a bad egg.

She really is a bad egg and you will regret it.

For a civilian you're not a bad egg at all.

They can never prove a case against him, but there's one of those three who is a bad egg in his own right.

Obviously, not every teacher who moves to a new school is a bad egg.

"You've got to eat them for 20 years to run into one bad egg," he said.

The old man must have known Roger was a bad egg.

She goes to the sorting room and is found to be a "bad egg".

"You certainly would, like an old hen sitting on a bad egg."

If he has had to discard a few bad eggs in the process, bully for him!