fox in the henhouse

Someone with bad intentions. (A fox would prey upon hens in a henhouse.) I'd watch out for him if I were you—he walks around here like a fox in the henhouse.

Common Names:

Name	Pronounced	Usage
Yoel	yo-EL (Jewish)	Hebrew, Biblical Hebrew
Zorion	-	Basque
Sybil	SIB-əl	English
Lavrenty	-	Russian
Clytia	-	Greek Mythology (Latinized)
Sydney	['sidni]