Jon rummaged through Karyn's drawers, no longer feeling weird about doing so. He pushed aside all her bras and panties and was searching though the back of the drawer. He was looking for a particular item, a t shirt of his Karyn had borrowed a few months ago. She had spilled a drink on her top when she was at his house before and had needed to change. The drawer was deep and Jon felt all kinds of soft materials he would never find in his own drawers, some soft silks, lacy cloth and stretchy nylons. He was just about to give up when he felt the familiar cotton of a t shirt. He pulled it out, delighted to have persisted. It was an old t shirt of his, plain blue. He quickly pulled it on over his naked chest, feeling a huge sense of relief to have something so familiar. The t shirt came down to just below his waist, leaving his junk exposed. He wished he'd find a pair of his boxer shorts in there too but knew that wouldn't be the case. Instead he looked through the variety of panties in the drawer. He eventually found a pair that were almost like boxer shorts in shape. Jon didn't know what they were called but they were a pair of "boy shorts".
The shorts were shaped somewhat like his usual boxer shorts but without the room in the front for his cock and balls. The material was also much softer than his usual and the colour was a light pastel blue, but he knew this was probably the best he could hope for. Jon pulled them up his smooth legs and felt them cling tight to his butt at the back and lightly compress his junk in the front. Jon took a few moments to take stock. He was happy when he looked down at his t shirt and saw such a familiar sight. And if he didn't inspect his underwear too closely he could almost convince himself he was dressed normally.
He turned to leave the room to brush his teeth when he caught sight of his reflection in the mirror. The t shirt looked a lot better on Karyn in the mirror than it did on him. Her breasts pushed the front of it out, straining against the fabric. He pulled the bottom of the t shirt up and stared at Karyn's smooth, flat crotch, nestled comfortably in the panties he had picked. Jon didn't want to get too excited so he peeled his eyes from the mirror, turned off the light and got into bed. He had been feeling a lot of stress the last few days, pretending to be someone else and so he quickly fell asleep.