Then another ding came not a minute later. I couldn’t ignore it, feeling a surge of excitement at the prospect of another salacious text from my go...geous younger sister. Yet I forced myself to finish rinsing off the soap before stepping out of the shower. Only then did I check the phone and notice a couple texts from Grace. She can wait. If it’s important, she’ll call. Sure enough, five minutes later the phone rang: it was Grace.“Hey, hon,” I answered. “What time are you headed over. Our fingers never stop touching, playing with each other.We were sharing that place, two students trying to stretch their pitiful bank accounts by sharing everything. For two years we went nonstop. We each put in relentless effort, never looking up from our studies, falling asleep exhausted every night. No vacation or social life for either of us. Until one night when I looked up from my book, thinking you had suddenly become very quiet and still. I looked up, thinking maybe you didn't feel. There was a small male population within the city as most males steered clear of the city. The most pervasive and perverse rumor was that something chemically different in the water had caused most of the transgender citizens of the city consuming it to have special effects. The effect in question is that their cum was incredibly potent and addicting. Their cum was inert to other transgender people, but to everyone else, consuming too much cum in a short time would cause the consumer to go. "We laughed together again and got up to don our bathrobes. While Nataliechanged our soaked sheets, I went down to the kitchen and warmed up someleft-over lasagna from the night before. We dined sitting across fromeach other so we could play footsy and slide toes up between the other'slegs.Dinner conversation scrupulously avoided the obvious subject. I know thatI wanted to gush praise on the novelty of the experience, but didn't wantto come off too enthusiastic. I didn't want her to doubt that,.