" David smirked. "Actually, I am taking you on a ride on my bike, to someplace special."Laylah got a quizzical look on her face. A bike? Ahhh, he must...mean his motorcycle, she surmised."Sounds, um, interesting..." Laylah said as she took another sip and stood up to get another cup.Quickly, Davis arose from his seat and took Laylah's cup and refilled it before she had a chance to do it herself."Thanks." Laylah smiled.David sat in silence as he listened to Laylah fill him in on the details of her. And I wanted to see it through. “I want to watch you guys fuck,” I said quietly. “Please. I want to know what it’s like between siblings." The girl’s smile widened. “Of course,” she said cheerfully. She turned to her brother and kissed him fiercely. His cock had turned limp after the uncomfortable revelation, but now it was showing definite signs of life. While they continued making out, I - still on my knees - took it in my mouth and sucked it quick and hard. I put my hand between the girl’s. I continued to move my body to the music trying to decide if I wanted to keep teasing him or not. I turned around again moving my hips and glanced again at my audience. Now sitting on the edge of his bed, the boy was staring straight at me. I continued to move trying to get a closer look without giving myself away, when I realized he has his hand down his shorts. The excitement surged through me and I felt my underwear go from damp to soaked. I had to continue my show; there was no question. She applied suction on the outstroke, and forced her face right up to the wall each time she took him back in. She stuck her tongue out, trying to get him deeper into her throat, and licking at his balls with its tip, through the hole.The cock was swelling even more now, and she moved faster. A mix of his precum and her drool was flowing from her mouth, over her naked tits and down her belly to finally mix with the juices she was churning up with her free hand, moving faster and faster inside.