This is pure crack fiction, it never happened, I don't own Supernatural, it's characters or writers, and my sister and I thought of this Idea.
The writers of Supernatural were celebrating the season three finale by getting drunk
"That w-was soo hil-hil- funny" hiccupped Eric Kripke, refilling his glass.
"I know r-right? Im-imagine their FACES!" Sera Gamble giggled.
"Guys. Be serious. What do we do next?" asked Robert Singer, who (surprisingly enough) didn't drink.
Kripke picked up a random mythology book and gave it to Gamble, who closed her eyes and picked a page.
"Angels?" she asked, a bit confused.
"Yesss! That's spectacu-lacu-lar!" slurred Kripke, grinning at the insertion of his favourite line.
"Oh! We should make one of them in luurve!" sang Gamble, who was attempting to crawl up the table leg.
"Okay...what'll her name be?" asked Singer.
" Her?" scoffed Kripke. "The fans will-will- something bad!"
He picked up the almost empty bottle and poured it over his face.
"Lets make it a boy! And-And- He can be in love w-with Dean-o!" said Gamble, lifting her head off the floor to drink some of the dripping whiskey.
"His name can be C-C-Cassie! Like Dean's true l-love!" offered Kripke.
"Well, there is an angel called Cassiel " said Singer.
"That's toooo obvi-yoos. Les' adda .." Gamble thought hard before randomly screaming "T!"
"Tcassiel?" asked Kripke, clearly confused.
"I think she means Cassiet." said Singer.
"No ya idiyoots." said Gamble, waving a finger drunkenly. "I meant CATSIEL!"
"And they can call him Catty!" said Kripke.
Singer shook his head.
"Well, I'm outta here. Be sure to write it down guys." he said before escaping the room.
They tried, but in their drunken stupor, writing was hard.
_SPN CRACK_
The next morning, they woke with a killer hangover and a piece of writing which was deciphered as-
Angel in love wid Deen. They never sae it tho. Nam-
Castiel.