THE HOLY GRAIL'S BEEN FOUND
This song comes just after the Grail is found, and the peasant/ audience member who helped find it has been brought up on stage.
Knights: The Holy Grail's been found
This peasant is renowned
Thanks to <insert name of peasant from audience>
Pause as one of the knights takes a Polaroid photo of the cast with the peasant
The Holy Grail's been found.