The next morning Lisa and I were having breakfast when Jacob came into the kitchen wearing his sister's thong and his mother bra padded with his socks, Lisa shook her head at her son and screamed, "That's my fucking bra your wearing and it doesn't even fit you properly... as soon as you finish having your breakfast, I'm taking you shopping."
An hour later I watched my wife and my son walking out of the house to her car to go shopping. Four hours later when I heard Lisa's car pull into our driveway I went and opened the front door for them and stood there in shock. Lisa was holding hands with who I suspected was our son, Jacob, except that he was dressed up as a gorgeous young girl.
Jacob was wearing a floral print short sleeve v-neck front button dress, with the top few buttons undone to expose the pink lace bra that he was wearing. When he stepped into the house and the door was closed, he turned around in a full circle, let me look at him and then lifted the hem of the dress up to his waist to expose his pink lace thong and then turned to show me his bare ass-cheeks.
"What do you think of our daughter, Jackie," giggled Lisa.
"Dad, do you like my outfit?" Jacob excitedly blurted.
"Yes I sure do, you look amazing," I replied, as I slipped my hand under the dress to feel his cock.
I then looked at Lisa and asked, "How much did this cost?"
Lisa giggling replied, "The dress and underwear cost nothing."
"What, how come?" I asked.
I took Jacob to a dress shop that one of my friends owns... and when I told him what we wanted he was happy to help," Lisa explained.
"The dress shop Owner is a man... why didn't you have to pay?" I asked.
"Dad, I let the owner fuck me in his shop... and he watched mom sucking my cock," giggled Jacob.
"Is the shop owner gay?" I asked.
"No, he is bi and has a wife and daughter and they're also bi," replied Lisa.
"Dad, he has invited us all over to their house tonight... can we all go?"
I looked at Lisa, she had a large smile on her face, and asked, "You want us to go over there, don't you?"
"Yes, it will be fun to play with someone else for a change," giggled Lisa.
The idea of being with another mother and her daughter excited me and I replied, "okay we can go."
"Go where?" asked Hope as she walked into the house from the back door.
"We have been invited over to mom's friend's house," replied Jacob.
Hope, just stood there opened mouthed for a minute, looking at how her brother was dressed, before giggling, "Who is this slut?"
"This is Jackie, your new sister," I chuckled.
"Where did you get the sexy clothes from?" asked Hope.
"Mom's friend Albert owns a dress shop," replied Jacob.
"If you let Albert fuck you... he might give you a new dress as well," I chuckled.
Hope stared at her brother, and asked, "Did you let him fuck you?"