In the US, for a while I remember we had billboards advertising McDonald's burgers as being "1 <hamburger> <hamburger>% beef". Because the hamburgers were of c

In the US, for a while I remember we had billboards advertising McDonald's burgers as being "1 <hamburger> <hamburger>% beef". Because the hamburgers were of course circular, it looked kind of like "100%". I remember thinking that surely an image of a hamburger does not legally constitute a zero.