"Guys…HEEEE HAAWWWW!" yelled Jeff as his ears began to grow into points. He fell backwards onto his butt - legs apart letting the huge genitalia he sported hang down. His tail was now fully grown and he landed on it shouting in pain.
His ears grew up through his long blonde hair while his eyes were open with fright. "I…I don't want to be a jack ass!" But already it was becoming apparent he would be, within minutes at this rate. Struggling to his feet he took another step - his toes now brown and hard clicking on the floor. Another wave of change hit him and he sank to his swollen knees. Thighs now large and hairy - Dave saw with horror that Jeff's front teeth were becoming more prominent. Larger and flatter. His lips were a little swollen too- also darker. His penis was thickening up- the foreskin becoming a tough fleshy sheath. He tried unsuccessfully to cover it with his large hairy hands.
David's eyes were wide with horror as his friend became unrecognizable. "I…I'm getting out of here!" He turned to run - as he did Jeff reached out to grab him with his large hand - now dark brown - each finger swollen and stiff. He managed to grip David's pant leg and as he ran - his pants came down sending his sprawling to the floor. Ben reacted - but not to David's nakedness, rather to the thick tail that was growing unnoticed by David from above his tight butt.
Ben shouted "David! You're changing too!" David turned round, trying to pull up his pants -as he did his hands brushed the tail which was sprouting at quite a rate. "Oh God no!" he yelled, tugging at the tail as if it would come off. It didn't. It was part of him, and soon he would be a donkey too.
Jeff's hairy face was soaked in sweat - his eyes rolling. He kicked his now heavily muscular legs - his penis now an animal sheath. His arms were straight - waving in the hair. The thick fingers now curled into fists. His fingers were sticking together and slowly they were merging into hooves. David got to his feet - he looked in fright as Jeff's belly began to take a rounded appearance as he writhed on the ground.