Walk this way

When Jon and Zoe had arrived at the mall, Jon realized that they had walked more than a mile, but when he asked Zoe to trade shoes... "Are you nuts? Why would I want to wear your dumb shoes, I wouldn't be caught dead with those things on MY feet..." Zoe said "Anyway, I'm going to meet my friends at the food court, later bro. And then Zoe bounded away. Jon was confused, he was still wearing his sisters shoes, and he knew they were hers, but she had acted like he always wore these kinds of shoes... "Whats going on here, and why don't my feet hurt anymore?" Jon asked fearfully.