My mother-in-law came to visit us from the countryside. Our house was small, so we were unsure where she would sleep. I offered to take the sofa, but she refused, saying that wasn't acceptable. My wife decided we'd all sleep together side by side. The chemise my mother-in-law wore as nightwear was incredibly sexy, and I lay down beside them, heart pounding. Unable to sleep, I found myself staring at her—her chemise had ridden up, revealing her smooth white thighs. It had been so long since I'd felt this aroused, and I couldn't hold back any longer. That night changed everything. On the second night, I woke up with a strange sensation in my lower body. To my shock, I saw my mother-in-law deeply sucking my cock. When I gasped in surprise, she simply said, "If you're this pent up, you'll feel better after letting go," and took me fully into her mouth once more, making me erupt with thick, white cum.