Written for a challenge issued by BriefShiningMoment. I'm going for the crack aspect here. Enjoy!

"YOU HAVE MAGIC?" Arthur whisper yelled. He gave his most furious glare to Merlin before continuing in a louder voice. "What exactly is stopping me from executing you? You better give me a damn good explanation for this."

Merlin struggled for words before saying "Well, I would never hurt you! Never! Never ever never ever ever! And plus magic isn't bad! Magic is like..."

Merlin slowly got quiet as his mind raced to think of a way to explain his actions.

Arthur saw his chance and he took it.

"Is it like a taco?"

"What?" Merlin exclaimed.

"Is it like a cat?"

"Arthur..." Merlin growled.

"Is it like a rug?"

"Arthur stop it." Merlin said.

"Is it like a book?"

"Arthur I'm serious." Merlin even made his serious face.

"Is it like a tree?"

"Arthur this is a serious conversation. Stoppit." Merlin made his angry face this time.

"Is it like a seashell?"

"Youv'e never even been to the sea!" Merlin exclaimed.

"Is it like a lamp?"

"Oh whatever. Sure. Magic is like a lamp. Are you happy now?" Merlin even conjured a lamp to prove his point.

"But Merlin! How can magic be like a lamp? Do tell." Arthur grinned.

"Umm... It glows bright?" Merlin tried to sound cheery when in reality he was about five seconds away from-

"Come on Merlin, you can be a bit more creative than that!" Arthur said with his most winning smile.

Merlin lifted the lamp above his head and , with his most evil grin, said "Well, they can both hurt you if I hit you hard enough with them."

Arthur wasn't fazed.

"Yeah, and with these fingers I can both fire you and call guards by snapping in morse code." Arthur looked very proud of himself for coming up with all of that.

"But morse code hasn't been invented yet!"

"Well neither have lamps."

With that chilling thought, they both proceeded to slowly sit on the ground and ponder just how much of the space time continuum they had messed up.

Arthur of course found his answer only seconds later.

"We must be time traveling purple lizard people. Merlin haven't you realized? Your magic can help us get home!"

Merlin just slapped him across his face and continued with his day as usual.

Arthur spent the rest of his day writing a letter to the lizard people.