It was a hot summer day. My little sister Nana flashed her boobs without a bra. "Your boobs are getting so big, big brother." She revealed my erection. My little sister's bare foot job made me cum, she licked my balls and made me cum, and we had sex intimately with our sweaty bodies. She even gave me a clean-up blowjob, and we crossed the line. "Did it feel good, big brother? Nana loves you, big brother. Hey, let's do it again." A summer memory of having sex over and over again.