The roads would be tight and there were no facilities at the park itself. I suggested that we needed a smaller vehicle for our riding around. We decid...d that a small pickup or SUV would work.The next morning, we pulled out and picked the first dealership we saw. There, we picked out a nice small SUV with good sight all around and a sun roof. Cathy would follow me in it with a HT on simplex. We also picked a camping place close to the park in Keystone. We went south and then west to Keystone and. Dad was behind her, his fingers rubbing between her legs as her eyes looked up at me while she licked and sucked me."Mmm, oh, Mom, oh, you are so good," I groaned."Oh, Son, your mom is the best. And it's something she loves to do. I suppose you might be finding out just how much she loves sucking a cock while you're here this week. It's nice that we can be open about all this. I suspect your mother might just get all the loving she craves."She sucked me a minute more, I know I would have cummed. After a few mins I felt my nuts tighten and I pulled out of her . She quickly fell onto her knees and this time she grabbed my cock and opened her mouth . I felt the burn up my cock as I sprayed huge strings of thick semen into her mouth , onto her forehead , on her nose and eyes . After I finished I watched as my sperm dripped off her chin and onto her chest and tops of her legs. I was shaking with adrenaline . She calmly cleaned herself off with the towel and I got dressed. I noticed Frank. After a few conversations with Doris Alex, I learned the only way to not prove myself an idiot was to keep my mouth shut around her. Professor Ryan did not teach anything that Doris should be wasting her time on. That was not an opinion expressed by her, but my own deeply held belief that Doris Alex could offer the world better things than a poem or a book, like the cure for cancer. My thought process halted as her actions registered on a physical level. Doris Alex had Professor Ryan’s dick.