 And it doesn't have to be oranges. Here's another reference from the 1950s. I squeezed my pig of lemon over the sliver of salmon. Well, not only that, it can be used for apple segments in the UK, particularly Scotland. But I want to go back to pig. One of the theories that I've read about why they might be called pigs is all the segments lined up in a row look like piglets nursing all in a row.