in (something) for (someone)

in (something) for (someone)

Involved with or a part of something in order to benefit from it. Why should we help you? What's in it for us? A boost to your resume is in it for you if you take this job.
Farlex Dictionary of Idioms.

in for something

due to receive a surprise; due to receive punishment. (When the something is it, the it usually means punishment.) I hope I'm not in for any surprises when I get home. Tommy, you broke my baseball bat. You're really in for it! If I ever catch that chicken thief, he'll be in for it for sure.

in some transaction for someone

having value for someone; having a benefit for someone. (Usually a question: What's in it for me?) What is in this deal for me? There is a lot of money in it for you.
See also: transaction
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

in for

1. Guaranteed to get or have, as in We're in for a difficult time. [Late 1500s]
2. in for it. Certain to encounter trouble or punishment, as in When Harry finds out we left early, we'll be in for it. [Late 1600s]
3. Involved or entered for some purpose, as in We're in for the profits. [Mid-1800s] Also see have it in for; in for a penny.
The American Heritage® Dictionary of Idioms by Christine Ammer.

in for

Guaranteed to get or have: You're in for a big surprise.
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • in some transaction for
  • transaction
  • close the door to (something)
  • What’s buzzin’ cousin?
  • What’s buzzin’?
  • buzzin
  • shakin
  • happ
  • What’s coming off?
  • poppin