A mess or a botched job. "You've made a right pig's ear of
that, haven't you?" Originates from the 16th century proverb,
"You can't make a silk purse out of a sow's ear".
In cockney rhyming slang, pig's ear = beer.
Actual pig's ears, available from butchers and pet shops, make
excellent dog chews. The more adventurous will find
shredded pig's ears available in some Chinese restaurants.