A teen's innocent curiosity leads her to discover the power she holds over her brother's body. She finds him sleeping, his cock tenting his shorts. She gently pulls it out, marveling at its size and stiffness. Her tongue darts out, licking the length, feeling the ridges and veins. She takes the head into her mouth, her cheeks hollowing as she sucks, her hand pumping what she can't fit. She's amazed at the control she has, making him groan and twitch with each touch.