As they approached the checkout line, Karyn smiled to herself. She remembered back to right after Jon gave her the stone at school. She knew how hard having breasts and long hair was for Jon and she decided to help him out ... by wishing that he'd be more comfortable with doing more feminine things, like wearing bras and other girl's clothes, among other things. If Jon was more comfortable with those types of things, maybe he wouldn't mind having breasts and long hair as much.
And without even realizing it, Jon wanted to do more and more girlish things. On the way to the checkout line, he suddenly stopped and walked in a different direction. Something had caught his eye and he just needed to go check it out.
Karyn smiled. He was shopping.
