GOP stands for "Grand Old Party," which is a nickname for the Republican Party in the United States. Think of it like a group of friends who all like the same things and have similar beliefs about how the country should be run. This group is known for being more conservative, meaning they like to stick to traditional methods and tend to be cautious about change. They believe in things like smaller government, fewer taxes, and personal responsibility. The GOP is one of the two major political parties in the United States, alongside the Democratic Party.