Here goes nothing;

Sam: Mr.Frodo, I have a confession to make.

Frodo: What is it?

Sam: well, you know how we're on Mt.Doom?

Frodo: Yes...

Sam: and you know how we're going to destroy the ring of power here?

Frodo: Yes...

Sam: you see, That's not the ring we left with.

WHAT DO YOU MEAN?

Sam: Well sir, beggin your pardon, but I sold it to this orc for some magic seeds, he said they'd grow so tall that Sauron would run away and never come back.

Frodo: and you believed him?

Sam: Not anymore sir, the seeds turned out to be rabbit droppings... So what do we do now?

There is nothing else for it...
Sorry, I couldn’t think of a better way to end it. But I'd just finished watching Monty Python’s: The meaning of Life.