In my early 30s my wife, our one-year-old and I visited my wife's parents over the holidays. At the time they lived out in the middle of nowhere.

No cable, no satellite, no internet and terrible cell phone service.

While that might sound awful, it ended up being amazing because the lack of distractions lead to my wife and I having tons of sex.

One night, right in the middle of our throes of passion, my wife's cell phone lit up.

Normally she would, of course, ignore it since she was "preoccupied" but she saw that it was her (4-5 years younger) sister calling.

She was house sitting for us and working on a paper for her Master's Degree. It's 11:00 at night, so my wife and I both assume something is wrong. My wife, still "fully engaged", pauses long enough to answer the phone. Turns out her sister was having problems with her computer and internet connection. Something she needed to work on her paper. My wife, rather than making up an excuse, like "he's in the bathroom", hands me the phone!

I calmly start troubleshooting with her sister while my wife is still on top of me. Apparently my wife got incredibly turned on by this and starts back up again. I know I started to breathe heavier and my wife actually put a pillow over her face to muffle her moans, but it was no good. My sister-in-law knew what we were doing. It took a minute for me to realize it, but when her tone changed on the other end of the phone I knew that she knew. I obviously don't know what she was doing while talking to me, the fantasies certainly abound, but she actually kept me on the line asking me unnecessary questions and I could hear the breathlessness and quiver in her voice. She was totally turned on, which made it even more difficult for me to keep it together.

I was eventually able to get off the phone, and "finish the task at hand", but I'll always remember that time I had a "two-and-a-half-some" with my wife and her sister.