I went to the door leading into the doctors office and heard low dulcet overtones, then I heard my sisters voice say something, so I went back to the ...eats and sat down reading a magazine.After a short while I heard my sister let out a moan, and as Looked to the door where it came from, I saw the keyhole.I got up and went across, dropped to my knees and peered through, and saw my sister completely naked and sucking his cock, on her knees.My heart was pounding, I had never seen her do anything. I got an early start and it was not too long before our young friend came over to help. Val had gone grocery shopping so we could talk freely. I asked him if he came over the night before to watch, he sheepishly nodded his head yes. I said did you like what you saw, his face lit up with the biggest smile and he said Oh Ya. So I asked him point blank, did you get off while you watched us and he said he got off twice. I said well you know this is very special and I can't keep the ladder against. She just stood there for a moment, eyeing me critically, sizing me up. For the first time in a long time I became self-conscious about my appearance. I was wearing the grunge look. My oily looking long shoulder length hair laid flat on my head, and my scrubby feeble attempt at a beard made me look unsavory, in spite of the fine features and clear grey eyes that I knew made for a handsome face that I diligently worked to obscure. I had on a shapeless flannel shirt over a ratty tee that had. So the thoughts and sight of Josie’s freckled breasts before me caused what I still get as an erection -- a ghost of its former self.She glanced at it, then at my face. All I could do was smile sheepishly. She realized what I’d been peeking at (and saw its result) and blushed again, but she wasn’t fast enough to hide her smile as she turned her back to me to remove her scrubs. She blushed again and got down to her bra and a pair of nice bikini panties.She raised her gaze to my eyes as she told.