Term used when someone is asking whether a person's pubic hair color matches the color of the hair on their head. This question is usually asked of a person with red hair.
Hey Charlie, I saw you went home with that cute redheaded chick from the bar last night. Did the carpet match the drapes?
Is the pubic hair (carpet) of the person being addressed the same color as the hair on his or her head (the drapes)? Typically asked of redheads, reflecting curiosity whether the hair color is artificial/enhanced or curiosity about natural variability in the hair color.