I think the worse use was in Arthur Conleys 'Sweet Soul Music'

Spotlight on Lou Ralls, y'all (yeah yeah)
Ah, don't he look tall, y'all (yeah yeah)
Singin' "Love's a Hurtin' Thing", y'all (yeah yeah)
Oh yeah, oh yeah

Getting lines to rhyme by sticking the same word on the end of every one just isn't on you know. May as well just make up some nonsense phrase like Whack-fol-de-riddle or ri-fol-de-rol.

Oh, hang on...

Cheers

DtG