The Legendary Black Beast of Aaaaarrrrrrggghhh

ARTHUR: Oh!

GALAHAD: My God!

LAUNCELOT: What is it?

BEDEVERE: I know! I know! I Know!

ARTHUR: What?

BEDEVERE: It's the ... oh ... (snaps his fingers as he tries to remember) it's the ... it's on the tip of my tongue ...

Another hideous roar.

BEDEVERE: That's it!

ARTHUR: What?

BEDEVERE: It's The Legendary Black Beast of Aaaaarrrrrrggghhh!