I was just wearing my pajamas, which consisted of one of dad’s shirts that I borrowed and no panties, and he was wearing his boxer shorts. I crawled...over to the VCR to put in the tape and start the movie. When I got up and walked back I was amazed to see that dad was trying to hide an erection that was tenting up his boxers. Now I knew that men got erections when they got sexually excited. We snuggled and watched the movie, but I was still trying to figure out what had given him an erection.. Then as the girl's handfrigged him, he clutched Julie's ass-cheeks. "Put some spit on her asshole," heordered Lisa.The good-looking auburn-haired girl knelt down and passed her tongue up and downher blonde girlfriend's ass crevice a few times, until her saliva glistened in the buttcrack.Herb put his hard rod-head against the rim of his girl-cousin's asshole and pressedforward."Oww!" Julie howled. "Easy! Easy! You're so big, you'll rip me wide open!"Herb's prick grew even bigger at feeling how. And without hesitating, she rolled over, pushed me on the bed, and straddled me."Whoah. Maddie, what are you doing?" I finally sputtered.She leaned down, pushing me on the bed, holding onto my arms, looked at me, and leaned in. "You. Smarty pants. I'm talking about you," Maddie said.I rolled her over and we started play wrestling in my bed. I know. Inappropriate as fuck, but she started teasing me, joking with me, and making wise cracks. And then it happened."Uh dude, you're poking me," Maddie. Being a guy in my mid 30's, and sexually frustrated, I fantasized more than once about things I'd do if given the chance with them. Sadly, I never pursued it and day after day, I just kept wishing and hoping something would happen that I'd enjoy.Little did I know, that something would happen on our vacation in the mountains.The first afternoon, going into early evening, Katie noticed me checking out girls in and around town. I never realized she'd seen it."I saw you checking out those girls Mr..