My mother's big ass held a special allure for me. One day, I peeked into her bedroom and caught her masturbating while calling out my younger brother's name. Seeing that, I began to suspect they might be involved in something intimate. When I confronted her, she confessed to having sexual relations with my brother. I was shocked by her words, but overwhelming jealousy surged within me. I felt it was unfair that only my brother could have such a special relationship with her. Unable to suppress these emotions, I reached out and touched my mother's thick, voluptuous ass.