<knock><knock><knock><knock>
"Oliver! are you home?" called a voice outside, he recognized the voice as that of his sister, he felt a chill going through his spine, he couldn't be seen in that state, he couldn't even start to explain it.
<knock><knock><knock><knock>
With childish worry he tried to tidy up before she could see him, suddenly he heard the sound of keys trying to open the door. "Oh no!" he told to himself trying to keep quite, then it dawn of him, he just needed to get back to his room. quickly he stripped off the briefs and ran naked back to his room just as his sister opened the door. "Oliver! I know you are here. Mrs. Thompson saw you come in. I need a favor."
Oliver desperately looked for something to wear in his room, and just spotted his laundry basket and pulled a pair of his boxers. Fearing that her sister might enter the room, he went to the bathroom hopping in one foot while trying to put on the oversized underwear. He just managed to close the bathroom door as her sister entered his room. "It's open! And what disaster do you have in the house. Oliver!" she called. Meanwhile in the bathroom felt a different experience, this time it was like getting pumped but the disorientation was still there, he was gaining height but at certain point he felt a rush of adrenaline and testosterone inundate his brain.
<knock><knock> "Oliver are you inside" asked his sister.
He looked himself in the mirror, he was back to his old age, literally, and replied. "Jenny, hi, hold on." he said opening the door. "Uhm, hi, I was taking a deuce."
His sister looked at him with a sceptical face. "...right. Look I don't have time, can I leave the kids with? I have an appointment."
"Sure, sure, no problem."
"Thanks! Oh... and change your underpants before leaving will you." Oliver was puzzled at the remark, it was true he picked them from the laundry, but how could she know... and then he felt it, the large sticky wet stain of his still chubby boner.