Spider man soon felt is body shaking by it self. His arms started to inflate violently. His almost non visible biceps forged themselves into two massive baseball size muscles. His triceps gained a lot of mass in order to compete with their rivals. Veins were snaking ot of Spidey's arms transmitting lava heat to other muscle groups.
"WHAT THE HELL" Spidey shouted. He felt a terrible pain each time one of his muscle grew.
"Muahahahaha" Venom laught. Spidey could hear is voice echoing in his head. "Feeling great aren't we"
Spidey's forarms spasmed violently at the same time. His muscles inflate almost outgrowing his costume. He felt the power of venom inside him, he was modifying his body. His muscles were inflating, His skin was getting thighter. His bones were growing. Soon, Spidey's traps and deltoid started racing for the top. His shoulders grew more and more and more to become as big as basketballs.The morphing men traps started to fused with his already inlarged neck.
"GYAAAAAARG!!!" he screamed in total pain.
"Don't you feel that power, my power, running trought your blood spidey. I'm making you grow buddy, I'm making you suitable. Don't you get it, we're fusing!" said the voice in his head.
"No, no, no, no! NOOOOOO" screamed the hero still fighting.
Spider Man fell on his shaking knees as his pecs began inflating. With every pulses, his chest grew farther and farther. His pecs, now bodybuilder size, were now blocking the sight of half of his legs. If he would have been standing up, he wouldn't see past his pectorals. The thightnes of his costume started stimulating his hyper sensitive nips.
"Quit fithing it Spidey!" ordered Venom "I know like it deep inside. After all, I am at the best place to see it"
"Stop it" moaned Spidey with a clearly deeper voice. "Stop it"
"My, my, isn't that a nice baritone we got here" teased the voice echoing in his head.
As Spidey's legs started inflating slowly, Spider Man felt something. His pain was deffinitivly there, but he also felt pleasure. His quads were getting so thight, but he felt also felt his crotch shaking.
"What is Venom doing?" thought Spidey
"I'm trying to make you love this pain" said venom. "You know, I can hear you clearly in here. Anyway, that pleasure, that's what pain means to us. Aren't you linking Spidey?"
His legs were know looking like two powerful tree trunks. The pleasure got more intense. Spidey now felt his little ass pulsing off. His butt bubbled and formed two tight soccers balls. Spider Man pleasure grew more as the pain dissipate.
"YES! MORE!" Spidey said in a mix of shout and moan. "No! NO! I DO NOT like it Venom! Stop it RIGHT NOW!"
"It's useless, you've already lost the fight" said Venom while laughting.
It was the turn of the calves. As they out grew their diamond size, Spidey felt is stomac get harder. His abs and lats, now too jealous, were slowly inflating from the top to the bottom.
2 pack: Is pleasure became so intense.
4 pack: He couldn't control his member anymore.
"Ooooh GooOOood! He said while moaning " 'feels so good"
"That's it, boy let it go" murmured the voice.
6 pack: His flaccid cock started getting harder.
8 pack: All the pain he now feel is transfered into sexual pleasure.
"OooooooOOOooooOOOoooooh!" moaned the new spidey "I feel... We fell soooooo good together"
"That's it!" exclamed Venom "Almost perfect"
10 pack: His cock is now 8 inch long (at his normal max). As is balls start to puls, pre cum is already weating the thight suit.
"OH NO!" shouted Spidey. "We're gonna..."
"NOT DONE YET" shouted again Spider Man "Enjoy the back"
Spidey was confused, he didn't mean to say that. Was venom really taking the control? His questions were soon rapidly flushed. Thepain created by is inflating back transformed into orgasmic pleasure. He couldn't take it anymore. Spider Man's 10 inch pole started to twich.
"I..I'M CUM..." started Spidey. " NO! WE! WE'RE CUMMING"
He was getting weter and weter. And finally he blast his load.
"GYAAAAAAAAAARG" they both shouted at once.
It was so powerful that the cum pass trought is spandex costume. Every load, he felt like he was lefting part of himself out of his body. Memories, passions, experience...
"Soooo Spidey..." ask Venom "Do you like it?"