Fulltiming is when someone lives in an RV or motorhome and travels around the country all year long. Just like how some people live in a house or apartment and stay in the same place all the time, fulltimers live in their RV and move from place to place. This lifestyle allows them to explore new locations, meet new people and experience different cultures. They have to be organized and keep their RV clean and tidy because they don't have much space. It's like going on a really long road trip, but instead of going back home, they keep on traveling.