make a pig's ear of something

make a pig's ear of (something)

To do a very poor job of something; to ruin something completely. Primarily heard in UK. I'm going to need to start this table over again from scratch—I really made a pig's ear of it. Janet made a pig's ear of the Jefferson account, so I'm going to need you to come in at the weekend and put things in order.
See also: ear, make, of
Farlex Dictionary of Idioms.

make a pig's ear of something

BRITISH, INFORMAL
If someone makes a pig's ear of something that they are doing, they do it very badly. I made a pig's ear of it last time and I'm going to make sure that won't happen again. Other countries have also made a pig's ear of their radioactive waste policy. Note: People sometimes vary this expression, for example by saying that something is a pig's ear. The current state of British sports politics is an absolute pig's ear. Note: This expression may refer to the fact that most parts of a pig can be eaten, but the ears are the least useful part.
See also: ear, make, of, something
Collins COBUILD Idioms Dictionary, 3rd ed.

make a pig’s ˈear (out) of something

(British English, informal) do something very badly: He made a real pig’s ear of his geography exam.
See also: ear, make, of, something
Farlex Partner Idioms Dictionary
See also:
  • a ghost at the feast
  • a horse of another
  • a horse of another color
  • a horse of another colour
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a straw will show which way the wind blows
  • a spoonful of sugar helps the medicine go down
  • a crack at (someone or something)
  • all right