I don't own Supernatural. Enjoy!
Lucifer strolled towards the vast area of trees and grasses mixed in with colorful flowers. He whistled a cheery tune that sounded suspiciously like "Highway to Hell" until he saw a figure sitting on a gigantic gray boulder. "Hey there, Gag Reel!" Lucifer yelled in greeting.
Said angel slid off the rock, his silver blade in hand. "It's Gadreel," he corrected, standing in place as Lucifer got closer and then stopped in front of the Garden's guard. "What do you want?"
"I wanna have a look around," the devil replied. "Y'know, take a tour of the Garden of Eden?"
"I cannot allow you to do that."
"Please?"
"No." Gadreel raised his angel blade up.
"Pretty please with whipped cream on top?"
"No." Gadreel had no idea what whipped cream was, and it probably wasn't a good thing if Lucifer approved of it.
"Aw, come on. Why can't I?"
"It's my job to protect the Garden."
Lucifer rolled his eyes. "Yeah, because so many people are trying to climb the trees!" he gestured behind him, where a young lion cub was trying to ascend the tree but fell off.
"I'm supposed to guard it from you," Gadreel poked Lucifer in the shoulder with the angel blade.
Lucifer held up his hands in surrender. "Okay. But don't think I won't be back tomorrow!" He flew off. If he would have tried flying past Gadreel, he also would have flown, and when that happens, molecules beat each other up and get all confused as to which grace they were supposed to be with.
Right at that moment, Gadreel knew he should have taken an office job.
Lucifer was true to his word, returning to the entrance of the Garden the next day. This time, however, he had some kind of white, circular pastry in his hand. Gadreel couldn't find the correct words to express his confusion at this. He had no use for food. He opened his mouth to speak, but the devil smacked him in the face with the cream pie.
Gadreel stumbled backwards, trying to wipe the sticky substance from his face. When he recovered, he discovered that Lucifer had gotten past him, the only trail a small, winding path in the grass as if a snake had gone through there.
"I'm so screwed," Gadreel muttered.
"Wait—what?!" Michael yelled.
Gadreel hung his head. He stood in Michael's office, a very organized place to say the least.
"He hit you with a pie?" the archangel gaped.
"Just kill me," Gadreel whimpered.
Michael rose from his chair, Gadreel backing up. "No. This is the most embarrassing thing that has ever happened—including what will happen," he growled. "No one is going to know about your little bake sale but us. Otherwise humans, angels, and demons will be mocking Heaven for all eternity! I will tell your brothers and sisters that you let the devil inside the Garden of Eden. How about that?!"
"Yes sir."
Michael huffed, running his fingers though his hair. "Unbelievable. Just unbelievable."
A sly grin spread across the devil's face. "Eve, we can make a pie with those apples," Lucifer insisted.