do a number on something

do a number on (someone or something)

1. To hurt or harm someone or something. Considering her pessimism toward marriage, her last break-up must have really done a number on her. Ugh, your puppy did a number on my new shoes—they're completely chewed up!
2. To urinate or defecate on something. My cat used to always use her litter box, but she regularly does a number on the floor, unfortunately.
See also: number, on
Farlex Dictionary of Idioms.

do a ˈnumber on somebody/something

(informal, especially American English) hurt, damage or criticize somebody/something seriously: Sun and pollution can really do a number on your skin. To the delight of Republicans, the press did a number on your senator (= criticized him severely).
See also: number, on, somebody, something
Farlex Partner Idioms Dictionary

do a number on something

1. tv. to urinate or defecate on something. Billy did a number on the bathroom floor.
2. tv. to damage or ruin something; to destroy something. The truck really did a number on my car.
See also: number, on, something
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • back at it
  • back at it (again)
  • chip off
  • a lot, not much, etc. in the way of something
  • can't stand
  • can't stand (someone or something)
  • blow up (one's) phone
  • be on (one's) back
  • be on somebody's back
  • be on someone's back