The witch's spell hit you full blast, a shimmering cloud of pink and purple, filling up your nostrils and making you sneeze. "What the...," you muttered, but before the psychedelic cloud filtered away, she was gone. Leaving you alone in her rainbow splattered apartment, wondering what the hell she had just hit you with.

"Great, how am I going to explain this one to Sam and Dean," you muttered, thinking more about Dean than Sam. He hadn't wanted you going on this case alone. "Damn it Y/N, it's freaking witches," he had argued over the phone, but you hadn't wanted to wait the three hours it would have taken for them to catch up to you. So you went in, alone, and now you have a missing witch and a mystery spell.

The witch was fairly organized and she had left everything behind in her haste to leave. Colorful baskets were full of herbs and ingredients, books and wands. With no effects from the spell yet, you gathered everything you could, tossing it in the backseat of your jeep, sneezing at the mix of patchouli and bergamot. "Witches," you mumbled, glancing in the mirror.

It looked like a unicorn had exploded on your face. Glittery green, pink, purple and blue covered you from your chin to your eyebrows. Your nose had a fine dusting of pink while your lips were green. It was grotesquely adorable and you couldn't wait to wash it off.

Turning your jeep north, you drove a couple of blocks down the small-town city main street before stopping in front of the Victorian looking hotel. Two stories tall, it was painted a bright and cheery yellow, the doors teal. Your room was on the far left, away from prying eyes as you stepped inside.

There was only one bed, iron, covered in a white frilly bedspread. The Walls were a light purple with creamy white trim with lace curtains on the windows. It was much too girly for you, but all the other rooms had been taken.

Stripping off your clothes as you went, you were soon standing beside the ancient clawfoot bathtub, turning the water on as hot as you could stand. Stepping into the water, you felt it prick your skin, your entire lower half burning before suddenly turning numb. "What the...," you muttered when the light tan on your legs blurred into teal?

Taking the washcloth, you quickly scrubbed your face, knowing you had to be imagining things. But where your two, slightly chubby legs had been was now a beautiful, shimmering, teal tail. A mermaid tale. All the way from where your toes had been up to your waist.

"No...no," you whispered, taking the washcloth and rubbed at the tail. It was slightly slimy, the scales catching the washcloth, tugging painfully.

"Y/N!" Dean called out as he knocked loudly on the door. Dean always seemed to have the worst timing ever, you thought to yourself as you tried to figure out your next step. But your tail had draped over the edge of the tub, and as you tried lifting yourself out, you just slipped back in.

"Y/N, is everything okay?" Dean called out, the handle rattling as he tried it again.

"Just a minute!" You called out, your voice frantic enough that it alerted Dean.

"Y/N, we're coming in," he insisted, his shoulder banging on the door as you once again slipped back into the tub.

Giving up, you tried reaching for the towel, wanting to cover up until you could try to explain your situation. Leaning over, your arm stretched out, you could only watch as Dean broke the door, rushing in, his gun out and ready.

Sam wasn't far behind him, but at least Dean's wide shoulders blocked Sam's view of your naked top half. Dean's eyes widened when he noticed you sitting topless in the bathtub. "Sam, I think I've got it," Dean assured his brother, hastily turning him around. "Go get another room, will you?"

Sam didn't argue too much as he was pushed out the door. As soon as he was gone and the door was closed as well as it could be, Dean was by your side, his gaze riveted on your tail. "Dean, can you hand me the towel?" You asked your arms across your chest.

It was only then Dean's attention was pulled away from your tail to your bare chest, his smile growing even wider. "Dean!"

Sighing, he handed over the towel. "It's not like I haven't seen those beauties before," he teased. "But this tail. Sweetheart, why didn't you tell us that you are a mermaid?"

"Damn it, Dean, I'm not!" You argued. "Now can you help me up?"

He slipped his arm underneath your shoulder, attempting to help you up. It was tough going, the tail getting in the way, and you had no idea how to control it. But soon you were perched on Dean's lap while he sat on the toilet, both of you soaking wet. "Now what?" He asked, but you started shivering, your skin tightening. "Dean, I think...," you tried to say, but your tongue felt five times too big. "I..,"

"Y/N, I think you need to stay in the water," he seemed to read your mind. Standing up, he placed you back in the cooling water. Immediately you began to feel better, taking a deep breath as your body immediately calmed. "So, not like the mermaids of lore."

"Dean, I can't just stay in the bathtub," you insisted. "What are we going to do?"

Dean sat back down on the toilet, rubbing the back of his neck. "Is the witch dead?"

You shook your head, noticing that your hair seemed longer than before, unruly and almost down to your waist. Your sense of smell was more pronounced, Dean's aftershave almost too much for your sensitive nose. "No, she ran right after she hit me with that rainbow shit."

"Rainbow shit?" Dean chuckled. "I'll have Sam go back to her place, see what he can find."

"No need. All of her stuff is in the back of my jeep," you told him. "But while I sit here and wait, can I at least have a shirt on?"

Dean tugged one out of your suitcase and you slipped it on, your tail splashing uncontrollably in the small tub. Sam knocked on the door. "Can I come in now?"

"Yeah," both you and Dean answered. Sam stepped inside, his eyes widening as he noticed the bright blue tail you were currently sporting.

"A mermaid," he was mesmerized. "Y/N, you're a mermaid."

You stared down at your tail. It was beautiful, and something you had dreamed about such a long time ago. But it was not nearly as much fun as you had ever imagined. You wanted your two, short and chubby legs back. "Wow, I hadn't noticed," You muttered.

"Freaking witch," Dean sighed. "Sam, Y/N brought her stuff back. Can you check it out, see if you find anything that would help. Y/N, you said you were hit by a...,"

"Rainbow. I was hit by a bright, colorful rainbow of a spell," you sighed, knowing that once you were fixed you would never be able to live this one down.

Both Sam and Dean snickered before heading to your jeep. A couple of trips later they had brought most of the stuff in and began searching through the various books. You stayed in the tub, feeling strangely at home in the water. It made you wonder if...ducking down as far as you could, you opened your eyes in the water. You could see so clearly in the bathwater, and you quickly found out you could breathe. It was weird and unsettling, but it felt right at the same time.

"Y/N!" Dean exclaimed, pulling you back up. "What the hell are you doing?"

"It felt right," you argued. "I need more water."

Sam and Dean glanced at each other. "Um, there's a pool out back. I think at this time of night no one would notice."

Dean gently picked you up while Sam led the way, a couple of books tucked under his arm. Most of the hotel lights were off, everyone already asleep. The pool was an oval shape, the far end deep while this side barely three feet deep. "Ready?" Dean asked you, and you nodded. Gently he placed you on the side, stepping back so you could slide on it. The water felt wonderful, cool against your tail.

Down you went, to the deep in, completely submerged, your tail moving smoothly as if you've had it your entire life. It was nervewracking at first, breathing underwater, but you quickly got the hang of it.

Splashing and moving around, you still kept Sam and Dean in the corner of your eye as they searched through the books. After circling the pool one more time, you came to the edge, hanging on and watching Dean.

Leaving Sam to research, Dean came forward, kneeling down until he was face to face with you. "How are you doing?" He asked, brushing back a wet strand of hair.

"Surprisingly well. But Dean, I don't want to stay a mermaid forever," you told him, staring up into the depths of his green eyes.

"I mean, you are freaking hot this way," he insisted, his eyes glancing down at your wet shirt to your tail. "But I do like you better with those two freaking hot legs wrapped around my...,"

"I found it!" Sam exclaimed, holding up a notebook. The outside was covered in soft white fur, the words written in glittery pink. "The spell seems simple enough to reverse."

"More rainbow dust in my face?"

Sam shook his head. "No, thank god. It's just a couple of ingredients I saw in her mix. I'll be right back." His long legs ate up the ground, leaving you and Dean alone around the darkened pool.

"You were saying?" You turned back to Dean. Instead of speaking, he took you by the shoulders, easily lifting you out of the pool until your mouth was level with his.

"I've been wanting to do this all day." His lips were chapped against yours, warm where the water had chilled yours. It felt perfect, and you wanted to pull him into the water with you so you could wrap your arms around him.

"Got it!" Sam exclaimed, and Dean pulled away, letting you drop back in the pool. Speaking clearly, Sam reversed the spell, sprinkling something gold over your head. Instantly it took effect, your whole body shivering, burning up at the same time. Your tail twitched uncontrollably.

"Dean!" You called out, reaching for him but before he could grasp your hand you were sinking to the bottom of the pool, everything turning dark.

"I've got you," Dean's spoke, his hand brushing your cheek as you slowly opened your eyes. Water dripped down his chin, his hair soaking wet. He was holding you in his arms, both of you sitting on the edge of the pool. "You're safe."

You glanced down, past your t-shirt, to see two chubby tan legs where the tail had been. "The spell worked."

"Yeah, it did. I've got my girl back," Dean exclaimed. "With her ten cute little toes, and her legs that drive me wild."

"These legs?" You scoffed. "They're chubby."

"And fit perfectly around my waist," he insisted. "They are beautiful."

He helped you to your feet. "And Sam has his own room, so I can show you just how much I love those legs." Before you knew what was happening Dean had picked you up in his arms, carrying you back to that frilly purple room.