Usually “prejudice” refers to an unfair opinion about a person or a group of people. Have you ever heard someone say, “all girls are bad at sports”? That’s a prejudice! Plenty of girls are good at sports (some are even better than boys!) so a person who believes that all girls are bad at sports is being unfair and prejudiced. Brussels sprouts might not look or smell tasty, but how do you know unless you’ve tried them? Baseball might not seem like it’s fun to play, but until you’ve picked up a bat and taken a swing, it wouldn’t really be fair to call baseball a bad sport.