The phrase "painted the town" usually refers to going out and having a wild night of partying, but there are countless antonyms or opposites to this phrase. Rather than going out drinking and dancing, you might opt to stay in and relax or have a quiet evening with friends. Alternatively, you could make plans to do something intellectual like attending a lecture, reading a book, or exploring a museum. You could also choose to have an active day outdoors, like hiking or playing a sport, or volunteer in your community. Whatever your preference, there are endless ways to spend your time that don't involve "painting the town.