Star Trek: The Next Generation1987

Lieutenant Worf:
Will you, or will you not, help me with the Hegh'bat?

Commander William T. Riker:
You are my friend. And in spite of everything I've said, if it were my place, I would probably help you. But I have been studying Klingon ritual and Klingon law, and I've discovered... it is not my place to fill that role. According to tradition, that honor falls to a family member - preferably the oldest son.

Lieutenant Worf:
That is impossible. He is a child.

Commander William T. Riker:
"The son of a Klingon is a man the day he can first hold a blade." True?

Lieutenant Worf:
Alexander is not fully Klingon. He is part Human!

Commander William T. Riker:
That's an excuse. What you really mean... is, it would be too hard to look at your son and tell him to bring you the knife, watch you stab it into your heart, then pull the knife out of your chest and wipe your blood on his sleeve. That's the rite of death, isn't it? Well, I'm sorry, Mr. Worf - I can't help you. There's only one person on this ship who can.