This is my first caption and try at this... so hope its good:
"Mom, please change us back! I'm sorry I didn't clean up my room!" I yelled at my mom, who was now in my body. I was now stuck in hers and stood by the door.
"Sorry, I'm headed out to see a movie with your, well, now my girlfriend," my mom replied. "Besides, your husband will be home soon!" she said with a laugh.
Suddenly, a car pulled up and out stepped my dad, er, husband. He walked to the door and opened it, seeing his wife and son standing there. "See you later Dad, I'll be back later tonight after watching a movie with Karen!" Matthew said and ran out the door.
My husband closed the door behind him and smiled at me. He pulled me close and began massaging my breasts. I could feel his penis growing in his pants behind me. He began to take off my shirt and kissed me hard on the lips. In my mind I was scared... my father was about to fuck his wife and I was stuck in her body. He pushed me down and took off his pants, showing his growing cock and pulled my head toward it. Before I could say a thing, his penis was inside my mouth and he was using my head as a base.
"Oh yeah honey, I love it when you suck my cock like that... mmmm..." he said as he began to shove my head back and forth along the length of his cock. After a few minutes, he pulled his cock out of my mouth. He then proceeded to pull down my panties, exposing my now wet pussy. He shoved his hard cock in and began fucking me hard and rough. I had always wanted to know what sex was like as a guy, but now I was being forced to experience it as a woman.
I prayed for the end and hoped it would be soon. I wanted to switch back with my mom as soon as she got back, but what my dad/husband said next turned me to ice.
"Are you ready baby? Think Matthew would be happy with a new baby brother or sister?"
I looked at my husband and tried to speak, but no words came out of my mouth as I felt his cock hardening inside my pussy. But it was already too late. With a loud grunt and roar, I felt his cock throb inside my pussy and knew he was sending load after load deep inside me. After a few minutes more, he pulled his cock out of my pussy, gave me a kiss, and went to go take a shower.
Hours later, my son came home. I begged him as soon as he walked in the door to switch us back. He laughed. "No way, Karen was great in bed and I love having a cock instead of a pussy."
"But, but your father, he --"
"Oh yeah, how was it? Did he cum inside his wife's ovulating pussy?" He laughed as he saw my expression. "I hope its a younger brother!" he said before going to his room and closing the door.
I sat down on the floor, contemplating my future. I was stuck as the wife and there was no way to change it. I silently cried three weeks later when I found out to my husband's happiness that I was pregnant.