You blink, your pants stuggling to contain your full erection. Your coworker smiles, holds out the bottle and crushes it with ease. No liquid sprays, did he drink the whole thing? No human has ever even consumed half a bottle. You watch in awe as the muscle bulge and press against his tight skin. Each ab, bicep, pec, flaring up into a thick mass of meat. You hand rubs your bulge, pants already soaking wet. You blush a bit but can't take your eyes off your coworker. He knows it, and smiles, feeling his own dick grow and soak itself wet. He looks up, smiles again, then lets out a faint whimper. The growth won't stop. He panics for a bit until a load drizzle down his cock, it's almost steaming with heat. The growing surges, and suddenly he can no longer move his limbs easily, the muscle swell with such size. You look on in marvel, stepping closer hoping that when, or if he stops, you can taste that roid juice.