My cock throbbed back in response. It became too much for both of us. She lifted off me, until just the tip rested at the entrance of her tunnel, then...down she dropped until again I was completely engulfed by her. Slowly but surely she found rhythm and speed. I attempted to thrust myself up at her, to meet her downward plunge. The intensity of our fuck increased. Air sucked in and out of the open mouth of her flung back head. She began to cum. Her movements slowed slightly, but now were harder. Noticing me getting out, Jake said, "There's a blanket on the wall there, if you want one," indicating the rock wall a few feet away. I got it and returned to where Christine lay in the grass, and spread it out next to her. I stretched out on the blanket next to her, leaving her room beside me. I realized that I too was covered with goose bumps, and that my nipples were at full attention. (My boobs might not be as big and perfect as Christine's, but my nipples are really long when they’re. . with each involuntary muscle contraction pumping something from deep inside my groin, up through my shaft, and into Vicki's waiting mouth. No words could describe the incredible pleasure I felt with each orgasmic spasm... I was cumming in waves.I grunted and groaned with each powerful spasm, and after four of five spurts, Vicki lifted her mouth from my spewing penis and swallowed hard, gulping a mouthful of something down her throat. Then she leaned back gasping as her hand continued to. " I don't care who you are or how you're related to him. This is a public facility and is open to anyone for visitations. I know a drunk like you is not his dad, so you have no say as to who visits him. If you don't like me being here, get his dad to order me out. Better yet why don't you leave and let us resume our conversation." I will leave for now, but this is my town and once you get out on the streets you come under my jurisdiction."He left as abruptly as he showed up and I had to smile.