chickens come home to roost

[chickens come home to roost] {informal} Words or acts come back to cause trouble for a person; something bad you said or did receives punishment; you get the punishment that you deserve.

Fred's chickens finally came home to roost today. He was late so often that the teacher made him go to the principal.

- Often used in a short form.

Mary's selfishness will come home to roost some day.