A couple from The Band, humorous takes on some old traditional lines:

"If I thought it would do any good, I'd stand on the rock where Moses stood" -When you awake

"Going on down to the rairoad track, let the 4:19 scratch my back."-Rag Mama Rag

Townes Van Zandt:
"The dust that Pancho bit down south, ended up in Lefty's mouth."

More Cole Porter:
"Mr. Harris bureaucrat,
Wants to give my cheek a pat,
If a Harris pat means a Paris hat, Bebe!"- Always True to You in My Fashion

Richard Thompson:

"If I could just taste all of her wildness now,
If I could hold her in my arms today,
Then I wouldn't want her any other way."- Bee's Wing

"Your flag decal won't get you into heaven anymore,
They're already overcrowded from your dirty little wars." -John Prine