Remember, a loser's behavior is a statement about him, not a statement about you. Don't do anything for him he should be doing for himself. Don't take care of him by explaining him, apologizing for him, or justifying him to your friends. If you do you will cripple him and further undermine his self- respect. Taking responsibility for him cripples him because it prevents him from doing those things he must do to be a fully functioning adult.
Consequences are what happens as the result of an antecedent behavior.
In other words, consequences are what happens as a result of something you do. Consequences provide feedback as to the effectiveness of the behavior allowing the individual to stop, modify, or continue the behavior. In short, consequences are a learning device. We tend to continue doing things which give us pleasure and quit doing things which give us pain. While it's true not everyone learns from consequences, no one learns without them.