Lonesome EJ,
I was going to say exactly the same thing as you about My Ding A Ling. I can't stand it, especially coming as it does from one of the greats.
Gilbert O'Sullivan has a lot to answer for as well. Of his many contenders I would nominate Claire.
But for sheer sliminess I think the Julio Iglesias nomination above (For All the Girls I've Loved Before) gets my vote.