This happened when I was a youth leader at a summer camp for kids in outback Australia. While we played out in the hot sun, I developed a throbbing migraine and needed to lie down.
The camp director suggested that I return to the dorms to rest-with the specific instruction to rest in the girls dorms as they were air conditioned. So I did as I was told and lied down on the floor of the air conditioned girls dorms to rest.
As I was lying on the ground I turned my head to one of the bunks and noticed a pair of light blue panties on the floor. I immediately got up and went to pick them up-they were used with pee stains and what appear to be dried pussy juice on them! My dick became rock hard when I realised they belonged to Mel, a girl who I had the hots for. How nice of Mel to be so careless to leave one of her dirty panties for me to find!
I needed to relieve the stresses coming from my balls and decided to 'share the load' around. I went through the bags of other girl leaders on the camp and found some clean panties-from Sarah's bag I found a pair of white cotton boy leg panties. In Joice's bag I found some blue nylon's and in Jennifer's bag there was a pair of black cotton undies.
Placing Mel's dirty undies on my nose, I jerked off loads of cum into the crotch areas of Sarah, Joice and Jennifer's panties. What an extreme delight that was! Unfortunately Joice's nylon undies did not soak up the cum as well as the cotton undies, so I wiped up the remains into Mel's.
I place the undies next to the window to let them sun dry and then replaced them to their bags. I never got caught and the best part was knowing that each of these girls were wearing a part of me for the next day or so.