You should be willing to help your friends.
Sam is hanging out with his friend at his house after school and his friend has explained he doesn't understand a lesson from school.
Sam wants to do something with his friend.
Sam offers to explain the lesson to his friend in a way that he will possibly understand.
Sam doesn't want to do schoolwork with his friend, so he suggest they play video games and forget schoolwork.
Sam's friend learns the information from Sam since Sam knows how to explain it to him, and he does well in class as a result.
Sam's friend never learns the lesson clearly and goes on to fail a test on the subject.