We went into the bathroom and I had her sit on the fur covered toilet lid. I went ahead and took off my shorts and halter top so we were both i... our bras and panties. She had on a white lace bra and a pair of too tight panties that had winnie the pooh on them, her legs were wide spread. I knelt down before her and reached up to her panties. As I was starting to pull them down she closed her legs and lifted her butt up so that they would come off easily. After. Quietly I crept towards her door that was luckily ajar. I couldn’t believe my eyes, there on Jenny’s bed my sister was spread eagle with Billy’s body between her legs. The sense of urgency in her voice surely wasn’t in her actions; her legs were wide, riding high on Billy’s thighs, so much so I could plainly see her cunt and Billy’s dick trying to punch into it. Now I’m no pervert but my sister has grown up a lot in the past year, her legs are tanned and long, on his elbows beneath him was a. She was blushing heavily, evidently aggitated and worrying. Horace could almost read guilty in her forehead. Pumpkin, are you okay? Im fuh… Im fine!, she tried to smile. I see. Is there something youd like to tell me?, he inquired, looking at the computer. It had all its lights on, but the monitor was off. It doesnt require a Sherlock Holmes to realize she was at the computer when he knocked. Im so busted, Clarice thought. No… uh… the computer is still on because Im waiting for Pauls e-mail,. He lifted up off my nipple as I opened my eyes and watched him pull off his shirt and pants, then he pulled his boxers to the floor. Unmissable. There it was. Big, bigger than I had expected. And stiff, standing straight out, well, a bit up, too. And kind of wavering about. I almost gasped when I first saw it. I knew my pussy pretty well, I've been getting off for about five years now, and his penis looked huge. Much larger than my vagina. I thought, "What am I going to do with that?" He knelt.