I used to wear gym short over my bike shorts because the idea of my large behind in skin tight clothing frightened me and I didn't want to subject others to that. As the year wore on, I eventually realized that the shorts alone were more comfortable. I snuck out for a ride around my neighborhood and liked the functionality. I ultimately built up the confidence to ride all the way to Philly that way. Now I do the same with tights. Sometimes I feel like a sausage inside the casing, but hey, it works, right?