"You want a man Ben? A REAL Man?" Tony asked, in a sexy growling voice.
Ben nods in agreement, his body buzzing with the super-heavyweight bodybuilder packet that was poured into his mouth. His muscles start to pulse and grow, becoming thicker, vascular, stronger.
Tony grabs three more packets from the table. One more super-heavyweight bodybuilder packet and two macho packets. He rips open one of the Macho packets and swallows half of it. After that, he rips open the rest of the packets, bundles them together, and pours all three down Ben's throat at once.
As Ben swallows the powder, he starts to sweat and tremble, letting out whimpers that become grunts.
"I'll give you a real man! The one that you see in the mirror every morning as you look into it!" Tony exclaims.
Ben's muscles start growing faster and faster. His arms thicken to be bigger than Tony's new massive tree trunk thighs even before flexing. Massive pecs barrel out, huge plates of mass hanging off Ben's frame. Extremely thick yet ripped abs pop out, supporting his huge torso. Shoulders and back widen and thicken, making him twice as wide as he is tall.
Tony stands back and watches the changes in Ben. He gets extremely aroused and his firehose dick starts to harden again, his balls churning with cum as he watches his friend become a massive muscleman.
Ben tries to stand up, disoriented, and still growing muscle. His skin has darkened to a golden brown tan, he has developed a dark 5 o'clock shadow, and his mind has changed. He now feels super-confident, even arrogant.
Fully erect, Ben starts to lumber towards Tony. Every muscle flexes insanely as he moves toward his friend, every step adding a little bit more muscle. "What the hell did you do to me?" Ben asks in a deeper, huskier voice. He is not sure when this will end, but he knows he's far from being done yet.