Sam panted as he stroked his enlarged cock. His mind was in a state of pleasurable haze, and all he could think about was how horney he was... He also couldn't stop staring at his friend's shaft... The way he stroked it sent him into a frenzy. Billy was in the same headspace, as they subconsciously began moving closer to each other. The tips of their cocks kissed, a string of precum stretching between them as their heads broke contact. They both moaned and looked up at each other, and Sam leaned forward, parting Billy's lips with his tongue, as they began making out. Billy grabbed Sam's cock, stroking it for him as they pressed against each other. Their crotches grinding against each other as they masturbated together. Tingles spread throughout their entire body as they did, and soon they were both nearing their respective climaxes.
Sam snuck a finger around the back of Billy, placing his forefinger up against his asshole. Beginning to rim and prod it, he teased Billy, who shivered in response. Billy eventually moaned out in complete ecstasy, As it drove him over the edge. Jets of cum began to spurt out onto both of their cocks as Billy came. This is turn sent Sam over the edge, as he began shooting out strands of seed onto his counterpart. The cum that came out almost shimmered, and was a tinted bluish-green... unbeknownst to them both, it was a side effect of the shell they's both encountered. They looked at each other, panting. "That was... so good..." Sam said, kissing Billy passionately.