High School Change
Another wonderful story done by the great http://www.furaffinity.net/user/roo5588/ for me
Warning: 18+ Naughty Stuff
Luke was just coming home from his summer school trip with his freshman buddy when he noticed it sitting on his computer desk. It had arrived on the day he met Mike during sign up for the student outreach program. Ever since he took it out of the small brown package, it felt like it was calling to him. A shiver went up his spine as he pulled his school jersey off his semi-muscular torso, messing up his black hair. Tossing it aside, he reached out towards the dark brown, leather dog collar. Feeling over the metal double buckle, he took deep breaths as he pulled the strap out of the loops. Raising the collar to his neck, Luke groaned, his nipples throbbing and his cock strained in his pants. His knees grew weak and he whimpered as he pressed it to his neck, giving off an orgasmic gasp as he sprayed hot, stick strands of jizz in his boxers. Holding back a loud moan, he humped the air hard as he pulled the strap through the loop...
Mike groaned, blinking hard after opening his eyes. At first he couldn't remember where he was because the last thing he remembered was being at Luke's house...and then Luke kissed him...and that was when he passed out. But then he started to recognize where he was. Looking around, he noticed the white walls, sports gear littering the floor, and the smell of body odor. He was in the equipment closet of the weight room. Panicking, he tried to move but finally realized he wasn't going anywhere. He was hanging from the ceiling from some kind of bungee cord like straps. The more he struggled, the more they stretched before bouncing him back into place. Panting, he tried to lift his head to look over his muscular chest, but he was stuck, his short brown hair growing damp because it was becoming a workout.
Huffing, he gave his head one long heave and shouted, "Somebody help..." He suddenly stopped with his jaw dropping just before he was forced to look back at the wall behind him again. He saw Luke, but it wasn't all him. He could have sworn he saw half of Luke's head and a dog or a wolf. Struggling, he tried to look again but the only thing he noticed was his clothes were torn, his collared green shirt torn around his nipples and the crotch of his jeans torn but he didn't know how far. Without warning, he felt something wet press up against his butt and he found out how far that tear went. "Luke, please, get me out of here!"
Luke grinned, his near amber eyes reflecting the light of the room. Letting a heavy groan leave his throat, he looked up at the ceiling past Mike's ass cheeks as he felt the black fur spread over the rest of his muzzle. His snarl made Mike jump just as his remaining human ear started to stretch to the top of his and turned into a pointed tip. Licking his lips, Luke reached up to grab Mike's ass with dark padded hands, making Mike jump as he light grazed his black claws across Mike's ass. With a twisted grin, he pressed the dark lips of his forming muzzle against Mike's hole, digging his long dog like tongue into Mike's insides. Mike gave off an inhuman growl as his hole was violated, clenching his fists until bronze claws pierced his fingertips. Luke opened his eyes and smiled before closing them, enjoying the sight of black stripes and orange fur forming over Mike's toned ass.
The perverted male grew hungry as he worked his tongue all the way to Mike's prostate, forcing Mike to gasp as he felt the thick muscle brushing up against his love spot. Snarling, Mike suddenly felt empowered, balling his fists again just as orange fur broke out over his chest. Muscles bulging, he easily lifted himself, struggling to kick Luke as he wanted to be the dominant one. Arching his back, Mike growled as his the skin around his cock slowly swallowed his shaft like a hungry hole. He clenched his eyes as he felt something brush against that sheathe, little barbs roughly brushing up against his skin. Luke turned his head and lusciously lapped his tongue in and out of Mike's hole. Snarling, Mike snapped his jaws as his mouth extended away from his face, his lips growing blunt and strong as it snapped and cracked, the skin of his nose becoming thick and black as golden eyes furiously starred at the wolf beneath him.
Luke looked back at Mike with a mocking grin, watching his ears become just like his before orange fur grew over the pointed tips. The wolf man fell forward, falling on Mike's bulging furry sac and forcing a fierce roar from the male, yipping as his ankles cracked and painfully shifted. The pain in Mike's aching balls then passed into the jock's ankles. He was forced to watch as his bare toes contorted and bulged, growing into huge mitten like paws as more bronze claws jutted out of his old toe nails.
Regaining his posture, Luke stood up on canine legs and paws, his canine nails dragging on the marble floor as he position himself between Mike's legs. Teasingly licking his lips, Luke stared into Mike's eyes as he pressed his paws against the back of the tiger's thighs, reaching between his legs to grab his nine inch melting cock, giving off a loud mur as his mushroom head shifted into a spear like prick, the base of his shaft starting to bulge just as the skin beneath the knot started to grow and hug it. Lifting the tip to Mike's hole that was drooling his wolf slobber, Mike gave off another pained roar as Luke ripped open his hole, tapping the knot over and over again against his throbbing rim. The tiger growled, digging his razor sharp claws into the bonds around his wrist. And just to see the pain on the bulky tiger's face, Luke thrust hard, tearing Mike open as he shoved his knot just past the tight rim of the tiger's hole. Mike shrieked, struggling to pull off the pulsing knot in his butt, his tail snaking its way out, long enough to touch the ground. Luke growled playfully, wagging his bushy tail as the fur sprouted out of the nub that had been growing since the beginning.
Cock throbbing in the new tiger-man's butthole, Luke only teased as he reached out to tweak the male's chest nubs, enjoying the face that Mike was helpless. Every now and then he gave the tiger a good smack on the ass or a tug to his sagging sac just to irritate the proud feline, just as arrogant as a wolf as he was a human. Though the whole butt fucking thing was new, Luke reached up to touch the collar around his neck, kind of wanting to thank whoever sent it...