Ben looked at the Myth powder, then pointed to a line on the side: TAKE IN COMBINATION WITH ANOTHER POWDER FOR MYTHIC EFFECT.
Tony glanced at it. "So?"
Ben said, "You need to take both together."
Tony shrugged, then reached onto the sample table. "Well, here's another Myth powder. You take that with something else. How bout this...?" He fished up a packet labeled "Atlas Formula." "Wanna look like Charles Atlas."
Ben grinned. "He's kind of skinny now for a bodybuilder, but sure."
They both ripped off the tops of their packets and downed them together. They tasted a lot like pixie sticks, mixed with Flintstones vitamins, but beyond that, didn't seem like anything special.
"My mouth feels chalky," Ben said.
Tony nodded. "Mine too. Let's just hit the food court and go home."
"Are you sure you don't want to buy anything?" the old man asked. "This is the last night the shop's open at this location. We won't be open tomorrow."
Tony shrugged, then felt a slight stirring in his shorts. "Nah, don't think so, but thanks."
Ben nodded in agreement and they left the shop, grabbing a couple Cokes at the food court to wash down the weird-tasting powder.
"Mind driving?" Ben asked. "I'm getting a muscle cramp in my back."
"Sure," said Tony. He rearranged himself in his shorts then they went and got the car, driving home. By the time they got there, Ben was grimacing. "Damn," he said, "I don't know what was in that stuff. I'm getting serious muscle cramps."
Tony felt his cock throbbing. "Well, must have been something, cause I've got a hard-on that won't quit. Mine must have been powdered Viagra." He helped Ben into the house just as the first spasm hit him and Tony watched Ben double over, his muscles starting from his skin and doubling in size.
"Aigh!" grunted Ben.
Tony forgot about his concern for his friend, however, since at that moment his raging hardon felt like it was going to burst and he quickly unbuckled his pants. His cock was projecting six inches above the band of his underwear, and then it started to emerge further, getting both longer and wider, passing his navel and projecting up to his chest.
"Aighgh!" Ben grunted as his muscles doubled again, then again, then quadrupled. And then his shoulders began to widen as he became taller and taller, finally turning into a giant with shoulders as wide as he was tall, hunched over and ducking for the ceiling
Tony had a hard time paying attention though since his cock continued to grow, passing Ben's head and hitting the ceiling, then forcing Tony to his knees and finally onto his ass as his mammoth member pushed against the plaster, ending up bent over, slightly longer as the titanic Ben was tall.
"What's happened to us?" rumbled Ben from the depths of his enormous chest. "We don't even look human anymore!"
Tony stroked his enormous shaft. "We've been been given the bodies of myths. I'm Priapus. You're Atlas." Tony fell over on his back, his penis crushing him to the floor. "I can't even hold my cock up it's so big...."
Ben flexed, then reached out a mighty hand and lifted Tony's cock upright. "I think I could carry anything with this body, but we need to go find the guy who gave us those powders, or live our lives as freaks."
"Please," begged Tony. "Jack me off. It's what I'm made for...."