Butters has been learning his colors and he has lately been obsessed with eyes. The wants to look at the cat's eyes, the dog's eyes, everyone's eyes and likes to talk about the colors.
Butters: Daddy's eyes brown.
Mom: That's right, your dad has brown eyes.
B: Mom's eyes blue.
M: Yes, and what color is my hair?
M: (pause) let's call it brown, okay?