Scenario A: You really want to play with a friend, who is only available for the next two hours. Your house rules are that you have to finish your homework before you are allowed to play.
Scenario B: Two of your good friends are arguing. Each expects you to take their side, and says they will only be your friend if you side with them. But you want to remain friends with both of them.
Scenario C: For a whole year, you have been looking forward to joining the traveling soccer team. You just found out that, although two of your friends made the team, you did not.