a bad egg

A dishonest or ill-behaved person. Primarily heard in US. We could tell he was a bad egg even at a young age.

(mainly American informal)

someone who behaves in a bad or dishonest way He's a bad egg - don't believe anything he says.

Name	Pronounced	Usage
Piaras	PEE-a-rus	Irish
Ichabod	IK-ə-bahd (English)	Biblical
Fridenot	-	Ancient Germanic
Panagiotakis	-	Greek
Allegra	[ə'legrə]
Balthazar	[bæl'θæzə]