I padded out the bra with a few pairs of socks then pulled on the knickers, I then went down on him sucking he cock,My cock was leaking like mad, I th...ught I was going to cum , it felt so good wearing a girls bra and knickers .He suddenly pulled his cock out of my mouth saying he was coming,He asked who's underwear was it, I said I think it was Kate's her mum tits was a lot bigger, He asked if I would fuck my step mum , I said no she was to old, What about Kate , I said I would but hadn't. There is no pressure to wear these things and if you do not enjoy it then we can go shopping for boys clothes tomorrow. Have fun and I can't wait to see you at 2pm in the living room, love Mike." I was in a state of shock, Mike was two steps ahead of me and it felt good. I instantly felt safe and all my anxieties about dressing up were gone. If I enjoyed it, great, if not it didn't matter. Similar to my present the night before I was like a kid at Christmas, I wanted to see what Mike had got. I lost my cherry over a year ago, but Arnie though he tries hard doesn,t always satisfy me with his small cock, but I think yours may do better plus all the experience you have will be lots of fun to teach me Grandpa.” “But you,re proposing i****t!” I argued. “I have a beautiful fully functioning body and you have a nice big chick and the sort of experiences I need to learn to please future sex partners. I don,t care if we,re related by blood as I feel very attracted to you and feel you must be. I let his cock slide through my fist, marveling at how red hot and slippery it had become. Then I carefully guided it up between my cheeks. I pulled the g-string to one side, and mounted him. This time, the mess of saliva plus the cum in my ass helped him slide into me with far less resistance, and I pressed down until my ass cheeks came to rest against his stomach and groin. He groaned appreciately, and I looked to one side to see myself in the mirror again. I liked what I saw - in the faint.