碎屑

碎 = 卒 + 石 : In the Eiffel Tower's bathroom (ei4) Susan Saint Bernard (su) got some stones (石) into her web which she cannot get rid of. Fortunately a soldier (卒) helps her to get rid of the rocks by smashing them into small pieces (碎) using his martial arts skills.

屑 = 尸 + 肖 : Marie Curie (xi) and the little prince (肖) are frequently visiting a ghost (尸) in the elevator's bathroom (e4). The ghost is feeding on their dandruff (屑), therefore it's a win-win situation for all of them, but secretly they feel it beneath their dignity (不屑).