Longtime friends Barry and Larry are on the back porch after (high) school with their laptops. Is that homework on their screens? The hot young widow next door sees repetitive motions through their fence's knot hole, and videos them. Maybe she can offer something non-electronic for their laps, hmm? When she's done, those 2 guys and their 2 girlfriends have poked through their first fence line to adulthood and found love.
Older sister seduces her younger brother. They begin making love often and thought that she was protected by an IUD. She missed two periods and began having morning sickness. Her OBGYN told her she was pregnant.