on your back
on (one's) back
Constantly nagging one about something. Ugh, my mom is on my back all the time about my grades, but I just have no interest in the classes I'm taking this semester.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
on your backin bed recovering from an injury or illness.
Farlex Partner Idioms Dictionary © Farlex 2017