Ripped fragments of colorful paper lay scattered across the floor. Empty boxes sat in one corner, and plush dolls, battle items, and various other trinkets were piled in another. A few humans stood around holding plates of cake, while Pokemon roamed around the house.

Not many trainers bothered to celebrate their Pokemon's birthdays, but Aaron always made sure to do so. His friends didn't quite understand, but they had shown up anyway, and between the barbeque dinner and the birthday cake, they seemed to be enjoying themselves nonetheless. The Pokemon of the day, an Espeon, surely was enjoying herself. A game of chess was set up, and Arnold, one of the humans, was losing miserably to her.

A purple glow surrounded the Espeon's queen, and it moved diagnally, pushing a pawn off the board. The human reached for his own queen, to threaten her's, but the Espeon shook her head. Looking closely, the human realized, it was checkmate. He hadn't even noticed he was in check.

Pushing the board away, he left the Espeon to celebrate. Psychic types were way too good at games like that. Even so, losing to a Pokemon... He thought he was a better player than that.

"Nice Job Penny." Aaron said, patting her on the head. Penny gave a small cry of approval, and made her queen shuffle across the board in a dance.

Soon enough, the party began to wind down. Tired Pokemon started returning to their Pokeballs, and the humans started saying their goodbyes. Soon, only Aaron and Penny were left.

Making sure they were alone, Aaron reached into his pocket, and pulled out a still wrapped gift. Putting it in front of the Espeon, it began to glow purple, and the paper was shredded. Opening the box, Penny saw a blue dildo sitting gently on a pile of cotton. She smiled. This had been tradition for the last few years, and she'd gotten quite a collection. She lifted it into the air, and spun it around for a moment. It reminded her of a Hydreigon, which was probably what it was modelled after.

"There's that, and... We can do anything you'd like tonight. How's that for a birthday gift?" Aaron said.

The Espeon sat back, slowly twirling the Hydreigon toy with her psychic powers, thinking about what he had just said. Seeming to get an idea, she dropped the toy, and levitated a deck of cards from across the room. She dealt them quickly, three upright in the center, two to each player.

"Poker?" Aaron said, confused. "That's what you'd like to do?" He felt a small tug on his shirt in response.

"Aaah, strip Poker. Sounds like fun." He started to pick up his cards, then stopped. "Wait a moment. You don't wear clothes. How are you going to play?"

Penny smiled knowingly, and went off into another room, motioning for him to wait. A moment passed, and she returned, bringing with her a box filled with sex toys. Dumping them out, she gestured at them.

"You'll take one of those each time you lose?" Aaron guessed. His Espeon nodded in agreement. "Seems fair."

He picked up his cards, and looked at those that had already been laid down. In his hand was a six of spades, and an eight of clubs. There was a King of Hearts, a nine of clubs, and a six of diamonds. So, he had a pair. It was low, but not too terrible.

Betting low, he motioned to one of his socks. The Espeon thought for a moment, and then pulled a small toy out from her box. Seemed she was calling him. The next card went down: A seven of diamonds. Taking another look at his hand, he realized, he only needed one card for a straight. He motioned to his jacket, indicating his bet. The Espeon removed the small toy, and took out a larger one, modelled after an Arcanine. The knot at the base shined intimidatingly. She gestured to his shirt. Seemed like a raise.

He nodded in agreement, and the last card went down. A Ten! Trying to keep his face still, he looked at the Espeon. He thought he could see a small look of disappointment, and she sat back, obviously passing. Putting his hand down, he displayed the straight he had gotten. She put her own hand down. A single pair of Kings, and four cards to a flush of diamonds.

Aaron sighed in relief. She had a good hand, but had gotten unlucky. He watched in enjoyment as Penny worked herself onto the Arcanine toy. He heard a small pop she pressed the knot in. Panting a bit at the feeling, she gathered up the cards and handed them to the human. Shuffling, he dealt out the hand for the next round.

A few rounds in, the Espeon was panting. She still had the Arcanine toy sealing her vagina, but now had two smaller toys fit neatly in her rear. Aaron was fully dressed, excluding socks from his only loss. One more win and Penny would be full: His victory. It was her deal. Besides the blush on her face, he could see a look of strong concentration.

He'd gotten two pair on the flop. Confident, he gestured to his jacket and shirt. She brought over her new toy, the blue Hydreigon, and dealt the next card. They both called, and the final card went down. Smiling, the Espeon brought out a second toy, and placed it by the first.

That seemed way too obvious. It was a bluff, he was sure of it. He called her bet, and placed down his cards. Two pair, king high. She grinned and put down her own. Three of a kind.

Stunned, Aaron sat for a moment. He was sure she had been bluffing! A purple glow covered his shirt, and it and the jacket were pulled off in one swift move. Sighing, he took of his socks as well, since they were what he had just matched her with.

The next round played out almost the same, and his three of a kind lost to her flush. He sat in his underwear, surprised at just how quickly the tables had turned.

The last hand. Whoever won this, won. He looked at the dealt cards. There was a possiblity of a straight there. He only needed one card to complete it. Having nothing else to bet, he motioned at his underwear. The Espeon called him, and the next card went down. Didn't help. Having nothing left to bet, they both called, and the last card went down. He got his straight, three to seven. Grinning, he put his hand down.

The Espeon looked defeated, and dropped her cards dejectedly, one falling face up, the other face down.. She picked up the dildo she had bet, and moved to towards her mouth. Grinning in triumph, Aaron started to move over to his Espeon. He saw her eyes flick over to the cards she had dropped, and a small purple glow illuminated the facedown card. It flipped over, and Aaron stared in shock. She had a straight as well, four to eight, just beating his.

Tables turned, Penny started moving over to him, and he took of his underwear. Having been watching his Pokemon fit all the toys into herself, he was already fully erect, and the Espeon rubbed against his crotch. Pulling the Arcanine toy out of herself with a small popping sound, she moved on top of her trainer, replacing the toy with his member.

Aaron groaned. He may have lost, but really, in the end, it didn't matter much either way. The end result was probably inevitable.

He moved upward, and set Penny against the ground, on her back. Holding her legs steady, he began to thrust in and out of her. She panted a bit, enjoying herself. Though, something seemed a little off. Slowing his thrusting a bit, he took a closer look at his Pokemon. She seemed to be concentrating on something. He saw a small flash of light, and his vision blurred.

He felt a pair of hands squeeze his legs, and he blinked to clear his vision. A smiling face was above him. A smiling, human face. He tried to cry out, but all he heard was a small squeak. He felt some pressure between his legs, and looked down. He was covered with fur. Pink fur. And between his legs...

Head spinning, he looked back up at the face above him. With a small cry of shock, he realized it was his own.

"You said we could do whatever I wanted tonight" The face said. "After all, it is my birthday. Power swap is a pretty handy move, isn't it?"

Was that... Penny? Did she- His thoughts were interrupted by a sudden thrust. Pleasure sparked through him, and he looked down at his loins again. He wasn't mistaken; he now had a vagina, and inside it... Well, technically it was him. His own member, anyway. It slowly slid out, and Aaron felt his body tighten around it. Another thrust, and Aaron moaned. He felt his own lubricant dripping out, making his fur slick.

Aaron squirmed, trying to unsuccessfully to flip his body over, as the two's interlocked genitals restricted his movement. The movement failed to do what he intended, and instead simply rubbed himself along the human's length, eliciting a few more moans from them both.

He was still confused as hell, but, regardless, the pleasure rippling through him was divine. The human, who he figured must be Penny, bent over and sped up her motions, and he placed his front paws against her chest. If he couldn't escape (and, he wasn't sure anymore that he wanted to), he might as well enjoy himself.

Each thrust built up tension in his loins, and Aaron felt a spot in his newly acquired vagina burning with pleasure each time the cock inside him rubbed by it. He moaned, and lay back, letting himself get lost in the rhythm.

The hand that was holding his leg let go and moved over to his cheek. Penny slowed down her thrusts, and the pleasure dancing through Aaron's body slowed as well, and began to recede a bit. Trying to recapture the feeling, Aaron thought back to earlier sex with Penny, when they had been in their own bodies. Replicating what he remembered of her motions, he gripped her with his legs, and rocked his body back and forth, rubbing himself along her length.

Penny lowered her head, and gave him a keep kiss. The passion of it was wonderful, but feeling his own lips, his own tongue, the scruff of face, rubbing against his catlike face, was incredibly strange. They broke the kiss, and Penny lifted Aaron's rear into the air, giving herself a better angle. She moved her other hand down, and Aaron cried out in surprise. She was toying with the two dildos that were still in his butt. He'd forgotten those were in there. The surprise of it made him clench, eliciting a gasp from the human above him.

The hand moved from the toys to the small of his back. Aaron squirmed, but Penny had complete control now. She held him steady as she trusted in and out. The pleasure began building up faster, in the same spot as before. He began to clench involuntarily, panting in unison with Penny. He felt a small ripple inside him, and he felt Penny's (or his own) warm liquid flood into his body.

His convultions quickened, and ecstasy flowed through his body with each clench, matching the rhythm of the human's thrusts. Both slowed down, and his body settled down from spasming pleasure to a simple warmth spread throughout. His vision started to blur, and he blinked again. A face was swimming in front of his eyes - A pink furred face.

Penny was smiling up at him, flicking her tail innocently. Aaron slid his reaquired member out of her body, and rubbed her slightly damp stomach gently. He cast around his mind for words to describe the experience, but was at a loss.

"Warn me next time you're going to do that" He said, finally finding his voice. She smiled up at him. Her eyes glowed for a brief moment, and he heard himself reply "Where would the fun be in that?"