Adam's struggling was getting on the last of Cody's nerves and so as soon as he arrived at the top of the stairs he grabbed Adam, put him over his knee and began to repeatedly spank his bottom. He spanked hard and true, not stopping until Adam was crying like the five year old he was and had a very red tush.
"You're acting like a baby Adam, maybe I'll have to make you even younger?"
Cody gripped the remote and in anger pointed it at Adam, pressing the minus three button and shrinking him even further. Adam's body became littler, shrinking to that of a two-year old. Adam pouted as Cody picked him up with one arm and carried him to his bedroom. With a press of the remote an unopened diaper, a bottle of baby powder, and a pacifier appeared next to him. Cody opened the diaper and slid it under the babies butt before applying the powder and sticking the pacifier into Adam's mouth to prevent him from complaining with what speech he had left. Then Cody smiled triumphantly and collapsed on the bed beside his baby, holding him tight. Though embarrassed and frustrated by his position Adam couldn't help but enjoy being pressed up against a warm, large body. It was somehow comforting. His eyes fluttered before he fell asleep beside his daddy. And then once he heard Cody's breathing slow he opened his eyes. Adam crawled across the bed, dragging his diaper before he reached the remote. He made sure to be right in its path before pressing the button labeled "plus twenty." He felt the diaper tighten against his crotch as he grew and then heard the telltale ripping sound as the crinkly fabric tore and fell to shreds from his growing member and muscular frame.
Cody's eyes opened to find that while he had slept things had changed dramatically. No longer was a diapered, infant version of his best friend curled up beside him. The remote he had used to change him was also missing. Cody fully awoke, and tried to jump up only to be forced down by four ropes tying his limbs to the corners of his bed. The sound of someone walking up the stairs was followed by an adonis of a man with bulging muscles and stubble, wearing nothing but a pair of boxers entered. Cody quickly realized that the man had borrowed a pair of his brother's underwear at that he was no man at all. He was just an aged up version of Adam.
"I see you've woken up. You seemed to get a lot of pleasure at seeing me helpless, so let's see how you like it, shall we?"
Adam purred, moving over to the bed and waving the remote in front of Cody's eyes.
"I won't make you a baby like you did to me though. Where would the fun in that be?"
Ignoring Cody's pleading Adam removed Cody's clothing with the remote, causing it to fade away and revealing a a throbbing, excited dick. It was surging with so much pleasure that Cody had already released a bit of precum onto his stomach.
"Looks like someone's excited! But I can't have you cumming."
Adam pointed the remote at Cody's dick and pressed a few buttons, regressing only it till it grew tiny. Knowing what would happen next Adam quickly pressed the clothing button that Cody had used, causing a thick white diaper to appear on top of Cody's crotch with a crinkling noise. His friend's penis wasn't the only thing that had shrunk, his bladder had too. Cody's teeny weenie began to spurt urine, completely ignoring any control he had had before. The front of his diaper yellowed with warmth and Cody purred in satisfaction. Though at first confused as to this he realized that it had been shrunk when he was mid-orgasm, so he had just released his equivalent to a load into a diaper. Cody turned red as Adam knelt down on the bed and undid the ropes around Cody's legs, lifting his diapered bottom up in the air. He slid the bottom of the diaper up to expose Cody's round bubble butt.
"Baby has a nice booty. Is he ready for daddy to go inside?"
Adam murmured, whispering into Cody's ear. His own dick was oozing excitement. His rapid increase in age had left him incredibly horny and rearing to go. At the moment he didn't care whether it was girl or boy that he went inside. And he would be going inside. He slid the diaper up to expose Cody's hole and moved his dick in slowly, penetrating him before pulling back and pounding his ass.
"You like that? Who's the bitch now Cody?"
Adam asked his friend with benefits as he rammed into his ass.