The next day was a Saturday and I spent too much of it thinking. The more time I spent on Jimmy and my Aunt Lila, the more I wanted mom. I'd gotten my...elf worked up to a fever pitch. Jimmy was there for me to vent my frustrations, but that wasn't going to solve anything so I decided that my one chance to make something happen between mom and me rested with my Aunt Lila. I called her and went over to talk. I had trouble getting starting because I didn't want to embarrass her. I was. "I'd like to see you try, you bastard!"That was it.I stood up from my chair, strode over to her end of the classroom and looked down at her slightly worried expression."I-its against the rules...y-you'd lose your job if you were to-" she was cut off by me pushing the desk forward, lifting her up by the scuff of her shirt and positioning her over the desk, with her ass stuck out.She turned her head around to face me, with what looked like tears forming in her eyes."Y-you're really doing to do it. I couldn’t believe my eyes and she didn’t even push him away, she just stared at me, smiling as she was being licked out by this huge fucking dog. I was so fucking hard I started wanking under the water.The dog mounted her and she grabbed it’s front paw holding it firm so as it didn’t slip off her back. Then she reached down between her legs and grabbed it’s cock. It was really long and the knot was clearly visible as she guided it into herself. The dog was humping away and she was encouraging. She longed for Tyler to send his load inside her, knowing it would feel amazing deep in her anus. Not long after, she was rewarded with that very feeling. Tyler grunted loudly as his dick started pulsing, sending wave after wave of semen into her tight ass. He continued to pump into her vigorously as the girl felt the hot ropes of cum deep inside of her. She felt her brain start to shut off as her eyes rolled back, making her yell out in another ecstatic orgasm. Tyler felt her anal sphincter.