I thought my sister, who lives with me, had come home drunk out of her mind, only to find her passed out in the bathroom! And she was still wearing her clothes while taking a full blast shower, completely soaked! Seeing her like that, instead of worrying about her catching a cold, I couldn't help but stare at her see-through bra and panties and got an erection! Just then, my sister woke up at just the right moment. She seemed still drunk and mistook me for her boyfriend, reaching out to touch my erect penis and suddenly took it into her mouth! Surprised by my sister's unexpected actions, but seeing her lewd state, I too lost my reason...
