1
general::
Phrase(s): 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., Phrase(s): 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.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
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.
American Heritage Idioms