What is the meaning of the word "a good voice to beg bacon"?

Definitions:

  1. Said in ridicule of a bad voice. copy to clipboard ADJECTIVE
    • I'm glad we didn't stay too long, he had a good voice to beg bacon. copy to clipboard
  2. said of a person with an unpleasant voice copy to clipboard noun
    • The new DJ has a good voice to beg bacon. copy to clipboard