Play word ちり紙交換 ちり紙交換 ちりがみこうかん collecting waste paper (old newspapers, etc.) and exchanging them for toilet paper
Play word 塵手水 塵手水 ちりちょうず ritual gestures (squatting, clapping, etc.) indicating that a fight will be clean
Play word 梁塵秘抄 梁塵秘抄 りょうじんひしょう Songs to Make the Dust Dance (by Goshirakawahouou (1127.10.18-1192.4.26))