"YESTERDAY WAS TUESDAY, BUT TODAY IS TUESDAY TOO!" Sam wailed.
"No dude you cray. Stop smokin," Dean mumbled.
"Let's go," Sam pulled Dean out of bed by his feet. He threw a shirt at him and told him to get dressed. He didn't. When they left the motel Sam saw that dude who looked like a fire hydrant sitting on the hood of the Impala. "What are you doing here?" he inquired forcefully.
"Happy Tuesday." The trickster said and winked. He snapped his fingers and was gone. Poof. Like a fairy. Suddenly a woman fell down on the other side of the road. Dean and Sam ran to her, only to find that she had been reduced to a pile of seventeenth century peasant-wear.
"Well this is suspicious," Noted Dean. "Must be demons."
Sam ran back to the Impala to gather supplies for a demon's trap. It was then that he realized there had been no evidence that suggested demons. "Dean…" He called out. He turned around and saw Dean, eating the body of the trickster. "Sonofabitch!" he yelled.
Dean turned around, hunched over with a mad grin. Blood dripped from his face, and the claws that had sprouted from his hands. "Happy Tuesday," He said and began to laugh hysterically. His foot twisted outwards, but he continued to limp towards Sam. "You s-s-s-stole my CATCHphras-s-se!" he cackled.
Before Dean could reach him, Sam grabbed some holy water from the car. He splashed it onto Dean and started skipping in circles around him chanting "Tuesday, Tuesday, Tuesday." Dean fell down dumbfounded and began to cry.
Suddenly there was an overwhelming bang from the heavens. The sky grew dark , but then the clouds parted around the sun. An angelic choir materialized around the opening, some playing the harp. The music came to a dramatic halt, and Castiel descended from the sky.
He swooped down, and perched atop Dean's shoulders—Dean was still covered in blood, sobbing. Cas gripped Dean's shoulders with his talon-like feet. "Caw-Caw, motherfuckers." He said. He shot a ceremonious arrow into the heart of the nearest passerby, before flying into the sunset with Dean in his grip.
Same woke up.
He checked his clock.
It was Tuesday.