"She was just seventeen/You know what I mean".... ("I Saw Her Standing There - The Beatles") That second line is horrilble in all songs, in which it appears.

The rhyme of "California" with "warn ya" was probably funny once...

I have always wondered whether the atrocious rhyme: "The city's clamour could never spoil/The dreams of a boy and goil" (Hart/Rogers "Manhattan") was a spoof of a New York dialect or the result of a very bad hangover for Lorenz Hart.

I fear this is going to be a very long thread!