My dad remarried and I suddenly had two older sisters. The house is small and there aren't many rooms, so the three of us - me, my sisters and I - were told to share a room. It's so noisy that I can't concentrate on my studies as I'm about to take an exam... But my two teenage sisters are curious about me, a guy! They decide to use me as a toy and go wild! They double-pound me in cowgirl positions that boys their age have never experienced... They relentlessly knead my sensitive spots and I ejaculate in no time! But they still don't stop! This is the climax of the erotic triangle!