“What’s your costume supposed to be?”
“I’m a hippie. Look, I have a tie-dye shirt and bellbottom pants.”

Tie-dye is created by twisting up a shirt and tying strings tightly around it, then dipping the shirt in different colors of dye. The strings divide the sections of color. It is emblematic of the peace-loving youth movement of the 1960s known as “hippies”. A similar Japanese method of dyeing cloth is known as “shibori”.