Title: We're Sick Like Animals
Rating: NC-17
Warnings: Sex, language, future mpreg
Spoilers: General Season 2 spoilers
Pairings: Kurt/Blaine, Brittany/Artie, Brittany/Santana
Word Count: 2,252
Summary: In a society where human animal hybrids run amok, Alphas are the dominant species, over humans, or Beta hybrids. An Alpha needs a Beta to feel complete, to feel whole. Blaine needs Kurt to be complete.

A/N: So here's the next part of WSLA! I tried combining smut and the history that I know a lot of people were worried about, so I hope it satisfies!

Blaine and Kurt walked through the doors of their history class, and the couple was greeted by a peppy blonde substitute teacher, who introduced herself as Holly Holiday.

"She's the coolest teacher the school has." Blaine whispered in Kurt's ear as they made their way towards the back, making sure to save seats for Quinn, Finn, and Britt. Artie had his own special seat in the back, so obviously no one claimed that one.

Kurt attempted to sit down in his seat, but before he could, Blaine plucked him from midair, and placed him on his lap. Kurt turned to look at Blaine, who simply arched a brow in response. Kurt let out a light laugh and rolled his eyes at his mate's antics. Blaine was just so ridiculous sometimes. But he loved him all the same for it.

Quinn and Finn dashed into the room just as the final bell rang, with the Rachel girl on their heels, chattering away to Finn. Quinn quickly spotted the mated couple, and slid into her seat next to Finn. Rachel took the seat next to Finn, the one reserved for Brittany, without asking.

At Kurt's incredulous stare, Quinn rolled her eyes. She bent her head down and Kurt followed suit, eager for the latest pack gossip.

"Apparently that Lopez girl who started eating Britt's face off mated with her too." Kurt raised an eyebrow. Two double matings within two days? Sure, he knew he was a rarity in a lot of ways, but this was getting to be fairly ridiculous!

"Only problem is, Brittany mated with her too." Kurt's jaw dropped.

"But what about Artie?" Blaine interjected, clearly listening in. Quinn shrugged.

"She's still mated to him. She says she's in love with both of them. But that's Britt for you. They're trying to work something out with Schue right now."

Kurt shook his head. He couldn't help but feel bad for both of Brittany's chosen mates. She was a beautiful and wonderful young woman, but she was certainly unique. Trying to handle her, as well as sharing her with another Alpha would not be an easy task for either of them.

"What about the stray?" He asked, gesturing towards the brunette who was currently leaning over on Finn's desk, twirling a lock of hair around her finger, attempting to look seductive by emphasizing what little upper chest she had.

Quinn's lip curled in distaste. "Rachel Berry. Apparently she's another Versatile, and she locked onto Finn. He doesn't know what to make of her. Personally I'm all in favor of a berry pie." Kurt snickered, and Blaine cracked a smile. The dark haired Alpha had to admit, for a blonde haired bitch, she certainly had an interesting sense of humor. Blaine could see that she and Kurt possibly bonded over a shared cattiness.

The class began to quiet down as the blonde teacher emerged, wearing a messy, bright red wig, tortoise shell glasses, and a drawn on mole on her left cheek, made out of khol. She began her lecture by opening up a map of Ohio, and placing a picture of the abandoned Lima Laboratories building on the board.

"As I'm sure all of you are familiar with this, I'll just do a brief touch-up. One hundred years ago, scientist Egbert Amlet-that's an unfortunate name really-made the biggest scientific mistake in the history of the world."

Kurt raised his eyebrows. He wasn't sure if that was actually true, but for the sake of learning, he would just go with it, and let Ms. Holly Holiday teach her lesson. It was certainly more interesting that the stuff he learned in Pre-Calc.

"Some say it was a huge scientific discovery. But the fact of the matter is he was doing illegal testing on both humans and animals, and bam! He created the Interspecies. Interspecies is a combination of the word 'Internal' and 'Species'. If there is a dog-human hybrid, for example, the common name for them is 'Interdog'. I have no clue what the scientific name is, because that's a science question. Anyways, the name means they share some of the same internal traits as a dog, and exhibit dog-like characteristics."

Kurt was beginning to grow bored with the lecture. He knew all of this already, he was an Interspecies himself. He had no clue what to call himself, as he was an animal-human-animal hybrid, but he didn't really care. All he cared about was the boy he was currently sitting on top of.

Suddenly struck with an idea, Kurt discreetly began looking around, seeing if anyone might catch on, when he executed his devious plan. Realizing that no one would, Kurt slowly began wiggling around, sliding from Blaine's lap to his thighs, the back of his knees resting atop of Blaine's.

"No one knows how the Interspecies were really created. Some say it was a chemical of some sort, others say it was in the form of a virus. Whatever way, it blew up in Amlet's face. Literally! Some kids were playing some hazing prank, and lit Lima Laboratories on fire. It caused a huge chemical blowup, and the resulting ash spread for miles, all throughout Ohio. And they carried whatever created the Interspecies with them."

Reaching his right hand behind him, Kurt began to stroke Blaine through the denim of his jeans. He heard Blaine's breath hitch in his chest, but he did not stop his actions, simply continuing to stroke Blaine's hardening cock over his jeans, all while staring at Ms. Holiday with rapt attention.

"Soon animal-human hybrids began popping up all over the place, with these weird rituals that humans were freaked out about. They did normal human things, and then some of them did weird animalistic things, such as growling at mailmen, or yowling when they were tossed into pools.

"Eventually, Interspecies were accepted, and successfully integrated into society. Some places, such as Lima, are more accepting of Interspecies than others, but that's fairly understandable, considering we are kind of to blame for the Interspecies. Not that there's anything wrong with being part animal."

Deciding that he wanted more, Kurt quickly and silently slid his hand down Blaine's pants, and into his boxers. Blaine let out a sharp gasp, and tightened his grip on Kurt's hips. But Kurt didn't turn around to see Blaine. He simply smirked, and began slowly stroke Blaine's rock hard length.

Kurt decided that he wanted to be cheeky, so he raised his free hand-his left one-and waved it in the air, waiting for Holly to call on him. When she did, he asked in his calm, normal voice, "Ms. Holliday, are you an Interhuman?"

The blonde beamed at him, and Kurt squeezed lightly on Blaine's cock, smirking in satisfaction as Blaine's nails dug into the skin covering his hipbones. He knew that he was driving his boyfriend absolutely wild, and he loved every second of it.

"I am indeed! I am an Interminx, could you guess?" Her question was met with a few titters, which she laughed along with, before continuing her lecture. "Anyways, now Interhumans are pretty much the norm. In some communities, you'll be hard pressed to find even one, though you may find a few who are, shall we say, 'closeted'?"

Kurt snickered at the word she chose, and continued to play with his mate's cock, teasing Blaine further by ghosting his fingers up and down the shaft. Out of the corner of his eye he saw Quinn arch her eyebrow and shoot him a look, one which Kurt returned with his patented bitch face. Quinn rolled her chocolate colored eyes, and looked away, a smirk on her face, pleased that she was in the know.

"Speaking of closeted, Interhumans are governed by much different rules than full humans are. Perhaps the biggest difference is the mating methods. Interhumans are classified and categorized into three categories, based on mating compatibility. Alphas, Betas, and Versatiles."

Kurt squeezed Blaine's cock again when the word 'Alphas' passed over Holly Holliday's lips, harder this time, but not hard enough to hurt. Kurt was making sure that Blaine knew he was Kurt's Alpha, that Kurt fully planned on being dominated by his mate.

"The Alpha is the dominant one in the relationship. Now I'm not talking full out kinky here, that will be in next week's lesson in the Health Department!" Her words were once more met with nervous giggles, and a few 'Aw yeahs!' from various guys around the room.

"They are the-how shall I put it-breadwinners in the relationship. Of course, that doesn't mean those stiff, uptight, old fashioned 50's housewife relationships, but they are the ones in control of the relationship.

"However, the Betas are the center of the relationship. They are the ones who carry the children, the ones whom the Alphas entrust their hearts with. But that doesn't mean in homosexual relationships that they are the 'girls'."

Hell yeah Kurt wasn't. He was male through and through, and he had the hardened cock to prove it. Blaine was currently leaning into Kurt's back, letting out muffled noises, trying to contain himself. God, who knew that Kurt was such an exhibitionist?

"But what most people don't realize, is Betas can be Alphas too. Sometimes people make the mistake, thinking that they are a Versatile, but in reality, they're an Alpha Beta. It's just a fancy way of saying that a Beta has their own pack, and once they get hitched, their mate is going to take over the pack."

Kurt casually moved his fingers down, and began playing with Blaine's balls, receiving what was sure to be a hickey on the back of his neck. He bit his lip to hold back a moan as Blaine began sucking fiercely on Kurt's neck.

Oh, so retaliation was the game that Blaine wanted to play? Then he could bring it on.

"Versatiles are perhaps the most unique of all Interhumans. They flow seamlessly between being a Dom, and a Sub. Unfortunately, it makes it nearly impossible for a Versatile to mate with anyone other than another Versatile, because it complicates the relationship dynamics."

Kurt noticed both Quinn and Finn avoiding each other's eyes, shifting uncomfortably in their seats. Kurt's heart went out to them. He felt so bad, knowing how much they had loved each other. Unfortunately, their relationship had just collapsed into one big hot damn mess.

"But the Mating itself is fascinating, mysterious, and pretty dang hot!" Oh hell yes it was! "Some matings are just like humans dating and falling in love. Two people hang out over a span of time, and fall in love. Other matings are at first sight, and are a whirlwind of lust and love. So overcome by their love, two Interhumans will fight against everything and everyone until they…consummate their relationship. This is pretty much frowned upon, because full Mating Ceremonies rarely occur in these spontaneous matings, but these whirlwinds usually last longer than marriages in Vegas!"

Suddenly, as Kurt wrapped his hand around Blaine's cock fully, Blaine bit down on his skin once more, and came right then and there, covering Kurt's hand in a warm, wet, stickiness. Kurt nonchalantly pulled his hand out of Blaine's pants, and casually licked his cum from his hand, causing Blaine to gasp and stare at him in wonder.

God, when had Kurt become a porn star from Blaine's wildest fantasies?

He could barely pay attention, but he was vaguely aware of Holly Holiday continuing her speech on Interhumans. "Occasionally there will be double matings. This is when two Alphas mate over one Beta, or two Betas mate over one Alpha. More often than not, the object of affection chooses one over the other, though it isn't unheard of for the Beta or Alpha to chose two mates.

"Of course, because this mating system is so common, and there are so many Interhumans at McKinley, we have prepared for these…unique circumstances. There are couches in the bathrooms for on sight matings, and for Betas in heat. We have a nursery for the couples with children , and in Health Class you're taught what to do during breeding season, or when a Beta is in Heat.

"Now not all Interhumans mate in high school, in fact a lot of them don't. But some do, and a few even mate for life, especially Interwolves, who only take one mate in their life."

Suddenly the bell rang out, and the class suddenly grabbed their books, leaving the classroom as Holly Holiday explained what she would be talking about tomorrow. Blaine quickly grabbed Kurt round the waist and dashed off. Before he knew it, Kurt was being yanked into a closet.

"Payback's a bitch." Blaine growled out attacking Kurt's neck with fierce kisses.

As the door slammed shut, allowing them some privacy, all Kurt could think about was the fact that if this was karma, he fucking loved it.