After having a long conversation with my little sister about sex and how babies are made, I decided to show her by my own hand how she can experience the greatest pleasure she has had in her short life. I put my fingers in her small vagina and she moaned like an adult, even though she had never felt the sensation of being penetrated before. I had her try my big cock so she could learn how to give blowjobs, then I couldn’t resist the temptation and, although it was wrong, I thrust my big dick into her small pink pussy. I listened to her delicate moans and got so excited that I changed positions many times.