Premise: Peter Billingsley (born April 16, 1971), also known as Peter Michaelsen and Peter Billingsley-Michaelsen, is an American actor, director, and producer, known for his role as Ralphie in the 1983 movie "A Christmas Story" and as "Messy Marvin" in the Hershey's Chocolate Syrup commercials during the 1970s. He began his career as an infant in television commercials.
Hypothesis: Peter Billingsley was 6 years old when he started acting