The common Finnish ice cream flavor "Terva" is translated into English as "Tar," but I wouldn't want to pave my street with it (it would melt and be sticky) and I certainly wouldn't want to put it in my mouth, unless I were guilty of some heinous, crime-against-dairy-food, and felt I needed to be punished severely.
This is some of the foulest tasting stuff I have ever eaten, and I've put down some gnarly stuff in my time. Thankfully, Kim brilliantly asked for a taste of it (in typically non-Finnish style) before I went up and ordered a massive scoop of it. We disagreed slightly on exactly how it tasted, though (other than horribly). Kim was convinced it had an odd, slightly rancid, meat flavor. I think it tasted like a shoe factory smells.
Ice cream should be pleasant and fun and not make you gag or hate cows. When in Finland, avoid Tar.