My sister is smart and has excellent grades. One day, I went to her room to take care of something, and to my surprise, she was masturbating with porn and toys. I was so surprised to see her playing with her pussy and using toys that I couldn't help but stare at her. When she noticed me, I thought she would be embarrassed, but she called me over and started playing with and licking my dick, and even put it in her pussy. I let my sister do what she wanted, and she made me climax with her skillful techniques.