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.

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.
See also:
  • a stranger to (someone or something)
  • be in bad with (someone)
  • accompany (one) on a/(one's) journey
  • accompany on a journey
  • be out of (one's) league
  • be out of somebody's league
  • (one) puts (one's) pants on one leg at a time
  • bargain
  • bargain for (someone or something) with (someone)
  • brief (someone) about (someone or something)