My sister and I are close. We're both college students and we share an apartment. We're both single and we masturbate in front of each other (we're both females). Last night I watched my sister masturbate. She always masturbates squatting down. She got naked and squatted down with her legs wide apart. She held open her c**t lips with her left hand and she stroked her slit with her right hand. Her slit was wet and she was moaning. She also rubbed her clit and her moaning became high-pitched. When she was close to squirting, her eyeballs rolled back and she started shaking. She told me that her c**t milk was coming. Then she screamed and squirted out her c**t milk. White goo squirted out of her c**t hole. She kept rubbing her clit until all her cum was out.