What is the all-time, most nerve-grating annoying advert you have ever had the misfortune to see/hear (tv or radio but not internet pop-ups as I would personally class them all as annoying).

I personally recollect one back in the early 1990s, I was flat on my back recovering form a severe lung infection, and the advert was on in every ad break for a TV listings magazine - I think it was something like TV Quick.... every 20 minutes havung to listing to the same annoying fragment of a pop song from 10 years or so before..

If I had more energy I would have probably thorown the TV out of the window.

I'm sure there have been adverts that were even more annoying, but this is my nomination!