Continue as the father
From Create Your Own Story
You feel the unmistakable feeling of your son cumming in your sack and you cover your eyes and and groan as pleasure shoots through your body. Suddenly your son stops struggling and you know he is gone. Finally you recover from your mind numbing actions and start to get off the bed when you see your eldest son standing in the doorway with a look of shock plain on his face at the sight of a cock as big as he is. You could CV him to, but you need to decide before your cock shrinks back to its original size.