Jon tried to concentrate on his homework but he was having a hard time, literally. His erection just wouldn't seem to subside. His penis was not used to being so enclosed in material as soft as the panties that he was wearing and the velvety material of the sweatpants wasn't helping matters. All his senses were being overloaded with femininity. The room he was in was full of reminders of his current situation. The laundry basket beside his desk had a bra strap hanging out the front. There was a few small vials and tubes of makeup in the corner of his desk. There was a distinct smell of flowery perfume in the air and his eyes kept being drawn to the small mirror at the back of his desk showing Karyn's reflection. Jon tried to distract himself with humour and made some funny faces at the mirror, seeing Karyn making these faces back at him. He could see the makeup on her face and the lip gloss he had put on after gym made her lips glisten in the evening light. Licking his lips slowly to see if he could taste it he was treated to the arousing image of Karyn slowly licking her plump lips. All of this only furthered his arousal and his penis was aching for release. He slowly rubbed at his erection through the material of the sweat pants and panties. His breathing picked up and still staring at the face in the mirror he saw a side of Karyn he had never seen before. Her cheeks were flush and her eyes had a glow to them. He had seen his own aroused face countless times but it was more of a grunting, intense face. Karyn's face in the mirror had a "come and take me" look to it.
Jon was looking at his erection tenting the front of his sweatpants and was about to release it from it's silky prison when Karyn's mom stuck her head in the bedroom door and said, "Karyn honey, dinner is ready. Your dad and brother are home so come on downstairs. You can finish your homework after dinner."
Jon was incredibly embarrassed. He felt like he had been caught masturbating. Looking at the tent in his pants again he thought there was no way anyone could have missed it but as he stood up and stretched, he turned towards the full size mirror and found some relief in the fact that his reflection showed no signs of his intense arousal. The crotch reflected in the mirror was smooth with no signs of his massive erection that felt like it was about to burst out. As Jon stretched his arms over his head, the reflection of Karyn doing the same was prominently displaying her large breasts. Jon had to look closely but he could see that her nipples were the only erection that she was showing. They stuck out quite a bit but the bra he was wearing covered them up mostly. Someone would have to look very closely to see any signs of arousal and he was fairly sure that Karyn's mom wouldn't have been looking and so wouldn't have noticed anything unusual.
Satisfied that he had gotten away with it but knowing that his arousal wouldn't go away for long, Jon went down for dinner, telling himself that he would have to take care of it after dinner.