I remember a story about a man who, while his wife is alive, helps with a Girl Scout troop. She dies, and the girls want to "treat" the man to one last camping trip. During the trip, the girls give themselves to the man. The twist is that the girl that starts the love-fest is the one who is most in love with the guy and works it out so that she gets pregnant during the trip, unknown to the guy, and there is some tension around this aspect. There is lots of viagra in the guy's coffee and he able to "perform". Can anyone help me find the story?