When I was in the Army our unit had a 3-mile timed run once a month with the base commander. The day of our run I came home for lunch. After lunch I had a little extra time before I had get back to the nearby base for the timed run. As I was changing into my running clothes my wife started kissing me and rubbing my cock. Soon it was rock hard, we were both undressed, and having sex. After I came she said that I had probably head for the base as the run was soon. I dressed, went to the base, and made my best time ever for the 3-mile timed run.
Our daughter was born nine months later. We always referred to her (just between us) as our fuck-and-run baby.