draw the line

(verb) to set the limit of what you are willing to do

Example Sentences:

A: Do you want to go out dancing on Thursday?
B: No, I have to draw the line. I can’t go out during the week anymore, because I’m too tired the next day.

The teacher drew the line when her students failed to complete any of their homework. She forced everyone to stay after school for 20 minutes.

Employee: Can I leave work early this afternoon?
Boss: No, I’m drawing the line. You have left early every day this week!

Media:

Similar idioms:

1. back to the drawing board
2. tie someone down
3. leave it to me
4. snow under
5. hit the road
6. the early bird catches the worm
7. touch on
8. keep someone in line
9. eat crow
10. wash one’s hands of something
11. put one’s ass on the line
12. pick up line
13. cross the line
14. drop someone a line
15. take a dig at someone