Transcript:
Marylin: You know, Mark, it's really remarkable how much you resemble your father... Mark: What? Marylin: Yes, you've got your father's eyes, and of course, his nose, too. Phil: Yeah, but he's got his mother's hair. Mark: Subtle, dad, real subtle!
A history lesson for you young’uns: Mr. Slackmeyer is referring to Mark’s hair length, not hair color.