Aiden felt very nervous about what Mark meant, but his anxiety was being overridden by his desire. Seeing Mark's new, heavily muscled and hairy body, coupled with his new package, was getting him excited. How was he ever going to get out of this?
"Turn around, so I can check out that ass of yours," Mark said. "Yes, Daddy," Aiden immediately replied, turning around as instructed, though he couldn't believe the words that just come out of his mouth. 'Daddy?' Was this another change Mark had made. It must have been. Why had Mark asked him to turn around? He glanced down over his shoulder. Aiden had a proper bubble butt now, with smooth, round, perky ass cheeks. Mark smacked his lips, stood up, and strode over to inspect Aiden closer. He grabbed Aiden's booty with one hairy hand, and he brought the other one around Aiden's stomach. Up close, it became extremely obvious how much taller, more massive and stronger Mark now was compared to him. It scared him, but it also made him feel safe and protected to feel Mark's arms around him.
Mark smacked Aiden's behind, causing him to yelp. Mark laughed and ran his hand up from Aiden's sensitive behind and traced a line up Aiden's back. Instinctively, Aiden arched his back, pressing his behind into Mark's body, feeling Mark's manhood begin to stiffen in response. Aiden's nipples stiffened and poked even further outwards from his chest than he thought possible. His pulse quickened and his pussy began to feel full, his clitoris beginning to engorge. He turned around to face Mark, who was beaming down at him with eyes full of desire.
Aiden reached up and ran his hands up through the forest of hair that coated Mark's stomach. It grew into a thick trail up the center leading to his massive pecs. Mark's chest hair marched right up to his collar bones and a sparse amount went up his neck to connect with his beard. Mark leaned down and began kissing Aiden, pulling him closer. Aiden could feel Mark's hairy body against his smooth skin and sensitive nipples. It felt electric. With one hand, Mark groped and fondled Aiden's chest, teasing and pulling at Aiden's nipples. Aiden moaned loudly, and felt a familiar wetness down below. Mark responded by scooping Aiden up around the waist and carrying him to the bed, laying him down gently. "You like that, pussyboy?" he asked. "Yes, Daddy!" Aiden moaned. "Suck on my tits"
Mark obliged, climbing over Aiden and lowering himself down so Aiden could feel Mark's weight on his body. Mark licked and sucked on Aiden's nipples while he began sliding his fingers into Aiden's eager vagina. "Do you want Daddy's cock inside you?" Mark asked.
"Fuck me, Daddy. Hard." Aiden said with certainty. Mark's mouth moved down to Aiden's pussy, going down on him for several minutes, making Aiden moan and squirm. Then Mark plunged his 10 inch member inside of Aiden and began thrusting, slowly at first and then increasing in speed. Mark was amazed at how good Aiden's pussy felt. "Fuck! You feel so good, baby. It feels so good to be inside you!" he growled. Aiden's legs were wrapped around Mark's body and he leaned down to make out with Aiden as he fucked him, harder and harder, until they both climaxed loudly.