Ah, Pathfinder feats, there are so many of them! One of my players had his fighter take the feat Spring Attack. This was early on in our campaign so everyone was still new to the rules. Spring Attack allows you to run up to a foe, attack them, and then run back without provoking an attack of opportunity. The way that my player explained it to me was that he was allowed to use his full movement to approach a foe, attack him, and them use his full movement to spring back. It felt like his character was the Hulk, making huge leaps around the map. As I said, we were still new to the rules so nobody questioned it. During the next session we had a new player who had some experience, and he politely informed us that he didn't think Spring Attack worked like that. As DM I felt a tad embarrassed and we nerfed the fighter.