As usual, I parked around the corner and slipped in through the back gate. The high hedge and garden plants meant that I could creep around outside th... house without being seen from inside after dusk. I’d done this a lot by then.I froze; my wife was perched on my stepfather’s lap, leaning back on his chest with her hands stretched down between her knees, where they held the head of a man I’d never seen before. He smiled at her like a kid in a toy store and then buried his head in her. She swirled her tongue around the head, and reveled in the sound of his moan. She started to taste a bit of his precum, and wondered why she didn't do this more often. She had never tasted anything this divine. It was like nothing she had ever had before, and it made her want to feel him inside her even more.She stood up, releasing his cock from her mouth with a 'pop', and told him to lie down. She couldn't help but feel giddy at how easily he obeyed her. She debated for a second on taking off. Then there was complete stillness. Nothing. His breathing returned back to its original rhythm. I could feel his hot limp cock pressing against my ass. I spread my legs and moved his cock between my thighs and rested it against my pussy and closed my legs. Cradling his cock against lips of my pussy. Nothing. No movement. I reached down to where his cock tip was sticking out between my legs and lightly caressed underneath the tip. I traced up to the tip and back down. He stirred and hardened. I assumed someone else was waiting their turn and was about to open the door when I recognised Victoria's voice. Well it wasn't really her voice, it was her laugh or, rather, her giggle. I immediately froze. What was going on out there?"Oh my god, I shouldn't be doing this" I heard her say. Then "No no don't stop for fucks sake". This followed by some rather loud groans.My mind was in turmoil. What was going on out there? Should I just stay where I was and listen? Should I charge out and demand.