Eventually we were both chased off to bed, presumably so they could enjoy some adult time and grope each other on the sofa without being openly judged...by two brats. I lay in my single bed while step bro had a fold out sofa bed to relax in and we chatted quietly in the barely lit room about varying subjects for no longer than 10 minutes before hearing footsteps coming up the hallway. The door opened and an adult head popped in allowing the hall light to illuminate the room, "sound asleep" they. My friend and I were watching movies and the few times I went to the bathroom I noticed lots of clothing on the floor in his sisters room, so I made my trips to the bathroom more frequent. On one of those times I went into her room and looked around at all the clothes on the floor, just a quick look as I did not want to get caught in her room by my friend. So back to the movie and then a little while later up again to use the bathroom, but first into his sisters room again. I turned on the. Erica doubled over, holding her gut as the water evacuated her body. The water would come in pulses and spurts and Erica complained of it burning as it left her body. “MMMMMMnnnnnnnn” she said in great relief.I kicked off the rest of my clothes and hoisted Erica’s skirt up over her boobs and her head and threw it on the floor. I turned on the bathroom fan. I stood in front of Erica with my dick close to her face. As she was squirting out the last of her dirty water, she took hold of my. The men could not actually see Lynda clearly as it was a very sunny day and the low sun was showing her in silhouette but they could clearly see in silhouette that she was taking her bra off and they could actually see the bounce of her freed breasts as she bent to drape the wet bra alongside the blouse on the radiator. As she walked back from the window to her seat, just clothed in her trousers, she came out of the sun and there for all the men to see was Lynda completely topless, her pretty.