When I was 14 me and my 16 year old sister made a bet were the loser has to do what the winner says for one night (I lost) she gave me sexy black panties and said put them on and I did and I got a erection. She said well hello there sissy boy taking a picture of me. She then said take the first pair of mums panties you see and wear them and go to sleep in them. I was lucky because my mum was 32 and wore sexy panties. I put on a sexy pink thong and went to sleep. My sister tied me to the bed when I was sleeping, blindfolded me and gagged with her red thongs. The next morning my mum walked to wake me up and she say me tied to the bed in her pink thong, blindfolded gagged with my sister red thongs and with a erection. What the bell is this she said. Once she untied me I told her I like wearing panties and she said she will punish me. She bent me over her lap and spanked my. I could see her panties and eventually I came all over the panties and her shoes. I stood up looking at her big breasts and perfect ass as she told me to clean it up but as I walked over to it I tripped up and fell into here. My hand landed on her ass, my head landed right in between her big breast and my penis against her Virginia cover by her dress. Felling her ass and breasts I came over her. We stayed in that position for 30 seconds. The next day she bought me New sexy panties