Well kiddo, Tarheel is actually a nickname for people from North Carolina, which is a state in the United States. People from North Carolina wanted a special name that would represent their state, and Tarheel came to mind because North Carolina was once a big producer of tar, which is made from pine trees.
North Carolina is a beautiful state with lots of different landscapes like beaches, mountains, and forests. It's also famous for things like BBQ, sweet tea, and college basketball. One of the most well-known universities in the state is the University of North Carolina, also known as UNC. They have a very good basketball team and their colors are blue and white.
Overall, North Carolina is a special place with a lot of history, culture, and unique things to see and do. And if you ever meet someone from there and they say they're a Tarheel, you'll know it's a special name just for people from that state!