I went to one of my friendís house. I saw his older sis fast asleep in bed. I knew that she could not wake up even if someone moved her. So, I tried my chance. I came in her room quietly and bolted the door. I removed the quilt and opened her shirt and her trousers to strip her to her bra and silk panties. I removed them also, but then she woke up. To my surprise, she liked it and had sex with me.