Avoiding lust is more difficult with women around wearing shorts. All those sexy legs... It doesn't help with keeping my thoughts pure. For a little while I tried to reward the women who wore long pants by looking at them while studiously avoiding those who wore shorts, on the grounds that they were looking for attention, but I quit on the grounds that the women wearing long pants might not like being stared at (which defeats my purpose). I still tend to avoid women in shorts.
I understand now that many women wear shorts to keep cool in the summer, but that seems like a poor excuse...