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.
ruffle someone's feathers
Fig. to irritate or annoy someone. I didn't mean to ruffle his feathers. I just thought that I would remind him of what he promised us.
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.
ruffle someone's feathers
Annoy or offend someone, as in Calling him a tightwad really ruffled his feathers. This term alludes to the stiffened, upright feathers of an angry bird. [Mid-1800s]
ruffle feathers
COMMON If someone ruffles feathers, they say or do something which upsets or annoys people. His management style ruffled a few feathers. The tall Texan ruffled some English feathers with his remarks. Note: If a bird's feathers are ruffled they stand out from its body, for example because it is frightened or angry.
ruffle someone's feathers
cause someone to become annoyed or upset.