When my sister masturbates, she likes to hold her c**t lips wide open with one hand and stroke her slit with her other hand. She's now 6 months pregnant. Because of her big belly, it's hard for her to hold open her c**t lips when she masturbates, so I have to hold open her c**t lips for her while she strokes her slit. I'm female, so it's no embarrassment for her. I'm not a lesbian, but I get turned on watching my sister masturbate. She moans a lot when she strokes her slit. She also rubs her clit (she has a fat clit). Her clit is sensitive, so she squeals when she rubs it (she makes sounds like "oooooooohh"). When she's close to cuming, she curls her toes. When she squirts out her c**t juice, she screams.