Saul sees the box where Tim had left it.
He picks it up.
"No, don't open it!" Tim says. "Whatever it did to me, it might do to you."
The other four men gather round the box a number of them still stroking their cocks. Something has them sexually overcharged and Tim suspects it's the influence of the box.
"Please, don't open it!" Tim pleads with Saul.
"Why not? Look what it did for you? What if it could do that for us, I'm sure we'd all like to be as furry and sexy as you, Tim." Saul says in a lustful tone.
"No don't..." Tim says as Saul lifts the lid.
Each of the five men gathered around the box looks into it and each feels a jolt go from their cocks up their spines and into the base of their skulls. It's a shock that becomes a pleasant tingle that radiates outward to their extremities.
Saul, small puny Saul, sets the box down as he staggers as if he were drunk. The other four men stagger too.
Each falls over as they lose their balance and sit squarely on the floor.
Saul's face and hands and arms begin turning jet black. Tim watches as small, puny Saul begins growing long black fur on his ballooning arms. In a few moments, Tim recognizes the distinct features of a male silverback gorilla. Time watches as the other men start changing too. One, ironically nick named 'Hoss' is becoming a Clydesdale anthromorph. Another guy, an extremely muscular man, is growing bull horns. The last two, a chubby guy is staring at his changing hand as bear claws grow, replacing his finger nails. The last man is taking on the silver fur, yellow eyes and bush tail of a timber wolf. Each has grown beyond the limits of their clothes and they sit naked amid the tatters of what they put on this morning.
After several minutes the changes cease leaving all five of the men have become anthropomorphic blends of man and animal, just as Tim had.
They grunt and growl at first, as they try to vocalize their thoughts, but then regain their ability to speak. Each of them has become the animal that suited their personality and spirit.
Saul stands up first, holding a cock larger than most humans and certainly many times greater than a natural Gorilla.
Saul says in a deep, powerful voice, "I call this trading up!"