The two watched as their changes progressed. Greg and Andy grew taller until they reached nine feet, though their legs remained the same length. Their stomachs grew fatter. Their arms lengthened and exploded with muscle, and their forearms became very thick. Their hands became more muscular and grew huge, followed by their shoulders. Their bodies became wider until they were about four feet wide. Then, their bodies started to become covered in fur. Greg’s was black and Andy’s was brown to match their respective hair colors. The fur on their backs turned silver. Their legs became much thicker with muscle to support their now 700 pound bodies. They then hunched over like real gorillas, so their default locomotion would be knuckle walking but could still walk upright if they wanted to. Their heads grew sagittal crests while their jaws extended into muzzles and they grew long, sharp fangs. Their noses receded into their faces as well. Their eyes turned brown. To finish the changes, their feet became muscular and more handlike. They started to play around in their new forms, loving how strong they felt. Then they found out that not only could they change back to human, they could return to their original teenage selves, and that their clothes could change with them and fit them in any form they wanted.