yeah Homer and Jethro constantly did parodies of popular songs, except when they did killer swing instrumentals...

Merle Travis had quite a few.... like 'When My Baby Double Talks to Me'. '(That) Fat Gal (of Mine)', 'Smoke, Smoke, Smoke that Cigarette', 'Divorce Me C.O.D.', on and on.... except when he did the coal songs and killer instrumentals...