Attended Catholic Memorial High School in West Roxbury, Massachusetts, and Boston College in Newton, Massachusetts. While in high school, Dave was in a serious car accident and sustained a spinal cord injury, which required him to wear a halo neck brace for several months. He met his wife while on vacation in Mexico. Their wedding took place in Arlmont, Massachusetts (Arlington/Belmont line).
- In addition to being a screenwriter, McLaughlin is a talented playwright. He wrote the play "Back to Before", which debuted in Boston, Massachusetts and starred pals Lance Greene and 罗伯特·沃尔伯格.
- Pal of 威尔·阿奈特. Wrote the film Southie (1998), which starred Arnett, Lance Greene and 罗伯特·沃尔伯格.