正
=
一
+
止
:
Mnemonic symbol: a stick-figure with straight lines. James II of England (zh) really has to use the engine's bathroom ((e)ng4), but there's a stick-figure (正) blocking the stalls with a barrier (止). The stick-figure measures with a flute (一) whether James is tall enough to go. James stands very straight (正) to make himself as tall as possible.
殿
=
𡱒
+
殳
:
Dorothy Gale (di) decided to set up her palace hall (殿), the Hall of Supreme Harmony (太和殿), in the anthill's bathroom (an4). She hired a ghost and a communist (𡱒) to serve as her guards and has them wield halberds (殳).