dirty, ragged, undress, to treat with irreverence
褺 centers on a state of being soiled, worn, or treated without respect: something dirty, ragged, or handled irreverently. The undress sense fits as a specific act of removing clothing, often in a careless or disrespectful way.
褺 combines 執 (which can suggest holding or grasping) with 衣 (clothing). The exact historical development is uncertain, but it likely relates to clothing that is held or treated roughly, leading to the ideas of dirtiness, raggedness, or irreverent handling.
Imagine grasping (執) a piece of clothing (衣) roughly, leaving it dirty and ragged. The act of undressing with irreverence soils the garment.
For チョウ, picture a disrespectful person named Chou roughly grabbing a dirty rag: Chou -> チョウ, and the irreverent handling makes the clothing even more ragged.