Mine pretty much center around trying to get my wife pregnant.
Once we HAD to get it done, and so we put in a video and locked our bedroom door. Of course, the kids come upstairs, knocking on the door, and asking why we get to jump on the bed. It was fairly difficult to finish.
Kind of like trying to get it into that little container when it's due at the doctor in an hour, so the doctor can get your wife pregnant.