Or were they really mentally undressing me - like the boys and menprobably were? Were they imagining what I would look like without thedress? Wonderin... what colour knickers I was wearing? I could feel myselfblushing. Now I was beginning to know what it felt like to be on thereceiving end of lascivious glances. As I looked at the group of women, Iwasn't so much mentally undressing them now. It was more a case ofwondering what it would feel like to wear what they were wearing. Nolonger admiring a. So as she struggled to get as much of me in her mouth, I placed my hands on her head, stroking her hair at first and then holding on to the sides of her head with a firmer grip. My s*s-in-law seemed unaware of what I was doing for she didn't stop what she was doing. It came as a shock to her when while gripping her head, I started to fuck her mouth with increasing thrusts. My first couple of thrusts went in a little too far as she really started to gag, but then I found a good rhythm and. " "Really" she stammered. "Yea, beats the hell out of scaring me half to death!" "But....I don't know" she whispered. "I like to play with myself as I watch you, I don't know if I can do that in front of you!" I laughed, "Are you k**ding me, I already watched you do that standing in my doorway!" She said "That's different tho!" I went "How?" She said "You'll see me! You'll see everything! I can't, I mean, I am embarrassed if you see me!" I told her that there is no way I would make. She dressed the way any 40+ year old mother would dress and treated her two kids with all the kindness of her heart.I have an older sister who is 3 years my senior; and while I had the odd fleeting fantasy about her, they were always just that, a fleeting moment that i would never imagine coming true.As a young teenager living at home I remember diving through the dirty laundry trying to find mums bras and panties to hide away in my room for a few days before i'd return them hoping to avoid.