When I returned to my parents' house for the first time in a while, my brother's wife (a former delinquent) who lives with my parents was wandering around in front of me in a thong, and I couldn't stand it. Her big ass and her thong that looked like it was about to reveal her asshole were the best, and even though she told me not to look, I couldn't stop staring! Of course, my dick was fully erect, and if my sister-in-law found me red-handed, it would be a big problem...