You shouldn't expect your friends to do certain things.
Greg, who loves extreme sports, is on a trip with some friends when he sees a bungee jumping place nearby.
Greg wants to go bungee jumping.
Greg asks his friends to drop him off at the bungee jumping place and to pick him up in a few hours.
Greg tells his friends that they need to go bungee jumping and keeps telling them until they give in.
Greg's friends work to please Greg and are grateful that they don't have to do it with him.
Greg's friends have a bad experience bungee jumping and resent Greg for his selfishness.