有麻烦
in trouble
You'll be for it when she finds out! 等她查出来你就麻烦了！
You'll be for it when she sees what a mess you've made!
If there's so much as a scratch on that car, he'll be for it!
If she's late a second time this week, she'll be for it!
I tell you what, if your father finds out what you did last night, you'll be for it!
James has been looking for you. You'll be for it, my girl!
See also: for preposition (IN TROUBLE)