do a job on

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.
3. To severely rebuke someone. Man, the boss really did a job on me for messing up that client's account.
4. To physically assault someone. The mafia leader sent a couple of goons to do a job on the witness so that she wouldn't testify in court.
See also: job, on
Farlex Dictionary of Idioms.

do a job on someone or something

 
1. Euph. to defecate on someone or something. (Note the variation in the second example.) The puppy did a job on the living-room carpet. It's supposed to do its job on the newspapers in the basement.
2. Sl. to damage someone or something; to mess up someone or something. The robbers really did a job on the bank guard. They beat him when they robbed the bank. The puppy did a job on my shoes. They are all chewed to pieces.
See also: job, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

do a job on

Also, do a number on. Damage, harm, as in The cat really did a job on the upholstery, or The teacher did a number on the class with that assignment. This slangy idiom uses job (or number) in the sense of "something negative."
See also: job, on
The American Heritage® Dictionary of Idioms by Christine Ammer.

do a job on

1. To damage, harm, or worsen: The stylist did a real job on my hair.
2. To defecate on.
See also: job, on
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • do a job on (someone or something)
  • do a job on someone
  • do a job on someone/something
  • do a number on
  • do a number on (someone or something)
  • do a number on somebody/something
  • do a number on someone
  • do a number on something
  • leave (someone, something, or oneself) (wide) open to (something)
  • leave open