The Cave of Caerbannog ("caer bannog" being Welsh for "turreted castle") is the home of the Legendary Black Beast of Aaaaarrrrrggggghhhhh.
King Arthur and his knights are led to the cave by Tim the Enchanter, and find that they must face down its guardian beast.
Ignoring Tim's warnings ("a vicious streak a mile wide!"), King Arthur orders Bors to chop its head off. Bors confidently approaches it, sword drawn, and is immediately decapitated by the rabbit biting clean through his neck, to the sound of a can opener.
Despite their initial shock, Sir Robin soiling his armor (again), and Tim's loud scoffing, the knights attack in force, but are driven into flight as the rabbit leaps and attacks, killing Gawain and Ector with ease. The others scatter to screams of "Run away! Run awaaaaaaaaaaay!"
Ultimately, the Holy Hand Grenade of Antioch is used to kill the beast and allow the quest to continue.
Earrings on etsy and eBay.
The YouTube clip right here.
Run away! Run awaaaaaaaay!