ruffle its feathers
ruffle (one's) feathers
To annoy, irritate, or upset someone. Sarah's just teasing you. Don't let her ruffle your feathers like that! Harry's bombastic, arrogant demeanor tends to ruffle people's feathers, but he's a decent guy at heart.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
ruffle its feathers
[for a bird] to point its feathers outward. The bird ruffled its feathers when it was annoyed. My parrot ruffles its feathers whenever it is ready to preen itself.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.