"Dad, NOOO!!" Luke shouted but it's useless. Erik kneeled to see under the bed and what he found out drove him crazy.
"H-hi, mr!" Kyle awkwardly said as Erik gaped at him.
"WHAT THE FUCK IS GOING ON?!!!" Erik yelled. "Who are you and what are you doing in my house?!!!"
"Dad, dad. Calm down!" Luke said. "I'll explain it to you!"
"I don't want to hear any explanation from you!" Erik yelled at his son. "Did you invite this man to our house? Oh god! Are you crazy?!!"
"No, dad. It's not what you're thinking!" Luke said. "It's Kyle!"
"Kyle?! He's not Kyle!" Luke's dad replied and then he said to the man under the bed. "Get out of there! You bastard!"
"It's me, mr. I'm Kyle!" The guy said as he came out from under the bed. However, when Erik saw that he was naked, things just got worse.
"Holy shit! You're fucking naked! You perv!!" Erik yelled. "Oh, lord! Luke! I never thought you had this kind of preferences! A man twice your age!! For god's sake, you're only 11, Luke!! My only son, a fag since too young!!"
"No, dad! I'm not like that!" Luke said. "You're wrong! He's Kyle!"
"Why do you insist in that bullshit?!!" Erik yelled. "Do you think that I'm too stupid to think this man could be your 11 years old friend? He's as tall as me and hairy like a bear!!" Kyle felt so ashamed to be described like that. "And did you see his dick?! Or are you going to tell me you're as hung as him?!"
"No, dad. I'm not going to tell you..." Luke said. "I'm going to show you." He raised his hand and showed the fruit he had to his dad. Then, he put it on his mouth and took a big bite of it.
"Noo, Luke, don't do it!!" Kyle shouted at his friend but it was too late. The fruit has already started to affect Luke's body.
Erik stared in show as he watched his son growing in front of him. Luke's body hair was the first thing to appear, covering his legs, arms and belly. When thick bushes grew out from his armpits, his sparse pubic hair began to get thicker and thicker until it was a thick forest, and then it started fanning out. Soon Luke's body was covered in hair with a thick forest between his growing pecs and abs. The forest grew down his legs and as they did his legs began to fill out with fat and muscle as they got longer. His arms and torso were lengthening as well, until Luke was as tall as his father.
Luke's arms fill out with muscle and grow hair to match the rest of his body stopping high on the backs of his hands. His fingers weather and thicken. Then his neck thickened and finally his head. His jaw, once round and boyish became way more square and angular. He coughed a few times as his voice adapted to its new deepness.
Finally, the bulge on his blue boxers started to grow, longer and thicker with each second that passes. The fabric stretched as far as it could as the obscene bulge menace to tear it off. Erik felt a little bit jealous that it was bigger than his.
"Oh what a rush!" Luke said in a sexy manly voice that definitely didn't belong to a kid. He tried to adjust his uncomfortably constrained package although it's pointless. "Now, do you believe me, dad?"