I Want to ....
Oh Wait, I already DO!!
This happened several years ago and by accident. I got home about 10:00am during a week day. I had been on travel for about 10 days. Wife and kids were at work and school. I walked to my bedroom and started getting undressed. I saw clothes on my bed an the shower was going, I thought my wife was home! I got naked just as I heard the shower turn off. I could see just alittle because the bathroom door was open alittle. I silently pushed the door open as I saw my wife bending over, with her as towards me, drying her hair.
I grabbed her hips and slammed my co ck into her, pushing her towards the counter, pinning her against it. She gasped for air as her head flew up and I looked at her in the mirror. It was my sister-in-law! (She could be my wife's twin) I didn't know what to say or do, i just stood there leaning against her ***. She was pushing back into me. We stared at each other in the mirror for what seemed like an eternity. I started to pull out, when she pushed back really hard...i got the message and started pumping into her like a mad man.
Then, she stepped to the side and laid on her back on the floor. I got between her thighs an pounded the hell outta her. I pulled out an came all over her stomach. We were both trying to catch our breath when the phone rang. It was my wife on the answering machine, telling me that she was taking the kids to practice and would be late getting home. Just before she hung up, she said "oh yeah, my sister is having her bathroom worked on, so she might stop by an use the guest room, Be nice to her an don't start any arguments", and hung up. We both laughed. I was the first to speak, when i told her 'next time lock the door'. She said, "next time, I'll be waiting for you! and no arguing"
We showered and continued in the guest room...we've had an affair ever since that day.