1. The scheme was a bad egg.

2. He a bad egg. I don't trust him.

3. That guy is a bad egg.

4. He a bad egg. Be careful of him.

5. William a bad egg. Better tell your sister not to date him.

6. He was considered to be a bad egg as a little child.

7. When smiling, you seem like a bad egg ,(Sentence dictionary) but you are not.

8. A person who could do this must be a bad egg.

9. At first I trusted him, but soon I found he's a bad egg.

10. I observed the doctor sniffing and sniffing, like someone tasting a bad egg.

11. He's been in prison several times for all sorts of crimes; he's a bad egg.