I share an apartment with my younger sister. She was horny last night and she needed someone to lick her slit, so I did it for her. She lay naked on her bed with her legs wide apart in the air. She held open her c**t lips while I licked her slit. She was moaning (ohhhhhhh). I licked her clit too. Her clit is sensitive, so she curled her toes and squealed (oooohhhhhh, sssssssss). When she was close to cuming, she screamed and told me to drink her milk. Then she squirted out a lot of milk.