Start a story. It involves four characters. A single dad named Mark, age 40. His oldest son, Josh, age 17. His middle son, Jeremy, age 15. And his youngest son, Jon, age 13. Mark has been good looking his whole life and passed that onto his three sons. He works as a construction consultant and his three kids attend high school at the local school. Josh Jon are in sports whereas Jeremy is into tech and reading. Start the story with the four of them eating breakfast and innocently catching up with each other.  One day Mark gets home from work and parks in the garage. He's had so little time to himself lately between the kids and work that he's so pent up. He sits in his car in the darkness of the garage and starts to jerk off his huge dick. 