"Okay. Better. God, if my friends saw this..." He mutters before taking a deep breath and downing the whole thing, screwing his eyes shut. He lets out a "Baah!" When he finishes, and brings the bottle down. For a minute, nothing happens.
"Are you sure he didn't sell you a dud? Because thi- Ow. Ow. Owwwwww fuck fuck fuck fuck!" He starts to say, before his eyes go wide and he falls to the ground. He rolls over, panting, and practically tears his pants off. His dick gets erect in less than a second, and starts growing and growing, stopping at ten inches, followed by his balls,. Which swell out to the size of softballs. The whole time, he's groaning loudly and writhing on the ground, his hands clawing at the dirt. His dick starts throbbing furiously, as if he's about to cum, and he whines desperately, trying to fight it off.