fall in line
- (idiomatic) To submit to the rules of a higher authority; obey; conform.
1901, Anna Maynard Barbour, chapter 18, in That Mainwaring Affair:
- It will be to your interest to accept my suggestions and fall in line with my plans.
- c. 2004, Career Soldiers, "Won't Waste My Life":
- If I had your life I'd put my throat to a knife,
- Fill your days with emptiness, but I don't have the time;
- I won't grow up, I won't fall in line.