pig's ear
n something that has been badly or clumsily done; a botched job (esp in the phrase make a pig's ear of (something))
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014