The idiom "bad egg" is used to describe a person who is not good or trustworthy. It refers to someone who has a bad character or who is likely to cause trouble or harm.
For example, if someone is known for being dishonest or unreliable, you might say "he's a bad egg." Similarly, if someone has a history of getting into trouble or causing problems, you might use this idiom to describe them.
The phrase "bad egg" is often used in a negative context, and it is not a compliment. It suggests that the person in question is not someone you can rely on or trust.
Overall, this idiom is used to describe someone who has a negative reputation or who has done something wrong in the past. It is a way of warning others to be careful around that person or to avoid them altogether.
• My cousin is a bad egg, he never helps anyone.
• After years of working in politics, she realized that most politicians were bad eggs.
• I knew he was a bad egg when he cheated on his girlfriend.
• I don't trust him, he's a bad egg and I'm sure he's up to something.
• The new employee turned out to be a bad egg, he was always late and never met his targets.
• The detective knew the suspect was a bad egg, but he couldn't prove it until he found the evidence.