Jon woke up. As he got out of bed, he wondering what Karyn could have wished for. He looked at himself in the mirror. Nope. Same body, just like he always was. He didn't have boobs. He didn't have a vagina. He was rather horny, and wondered of that was what Karyn had wished up. He didn't think so. He was pretty normal for a guy in that regard.
Jon put on his sneakers... and nothing else. It was an older pair, but he didn't feel like dressing up in any of his nice sneakers. He was only meeting Karyn, and it wasn't like her shoes would be in any better condition.
Jon walked downstairs. As he did so, he passed several family pictures. In every single one, not only was Jon nude, his family was nude as well. Aside from shoes, they wouldn't have understood the concept of clothes. They weren't ashamed of their bodies and there was no climate reasons to wear clothes and as far as Jon knew, it had always been that way. As a result, Jon failed to notice that not only had Karyn made him nude, but she had made everyone nude.