show (one's) horns

To reveal one's evil or malicious nature. The devil is typically depicted with horns. I thought I could trust Eric until he showed his horns by spreading rumors about me. Jill definitely sabotaged my last two relationships. She might seem nice, but she always shows her horns eventually.

Common Names:

Name	Pronounced	Usage
Lorinda	[ləu'rində]
Cateline	-	Medieval French
Lerato	-	Southern African, Sotho
Obadiah	o-bə-DIE-ə (English)	Biblical
Lorena (1)	-	Spanish, Portuguese, Italian, Croatian
Michael	MIE-kəl (English), MI-khah-el (German), MEE-kah-el (Swedish, Norwegian, Danish)	English, German, Swedish, Norwegian, Danish, Dutch, Czech, Biblical, Biblical Latin, Biblical Greek