What does it mean to be nice? Some days it takes practice, or even courage. Sometimes being nice means being patient with your little brother who doesn't know how to treat your favorite things. Being nice can mean going to your sister's boring dance recital. Or tasting a tuna noodle casserole your grandma made--when you can't stand tuna noodle casserole. Being nice takes practice, and that's okay. You just keep trying, and soon you discover how GREAT it feels.to be nice!.