Decapodian Emperor: The law is clear. Fry and Zoidberg shall fight to the death for the claw of the beautiful Edna.
Fry: But I don't want her!
Decapodian Emperor: Once invoked, the sacred tradition of Claw-Plach can not be taken back. It is a recent tradition, only 18 years old, but it is a tradition none the less.