do a job on someone
do a job on (someone or something)
1. To have a harmful impact on someone or something. Considering her pessimism toward marriage, her last break-up must have really done a job on her. Ugh, your puppy did a job on my new shoes—they're completely chewed up!
2. Of a domesticated animal (typically a pet), to defecate on something. My cat used to always use her litter box, but she regularly does a job on the floor, unfortunately.
do a job on someonemainly AMERICAN, INFORMAL
If one person does a job on another, the first person badly hurts or harms the second or defeats them completely. Look at your face! They sure did a job on you! Yankees pitchers did a job on Boston's two most valuable players.