What's eating?

What's eating (someone)?

What's bothering someone? Why is someone in a bad mood? What's eating Terry today? I asked him how his weekend was and he just glared at me. I've never seen her act that way before. What's eating her?
See also: eating
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

What's eating someone?

Inf. Fig. What is bothering someone? Tom: Go away! Bob: Gee, Tom, what's eating you? Bill: Tom's so grouchy lately. What's eating him? Bob: Beats me!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also: