山腰

山 = 丨 + 凵 : Mnemonic symbol: 山 looks like the tip of a fork. Sherlock Holmes (sh) is climbing a mountain (山) in front of the anthill (an1). He uses a dinosaur bone (〡) as walking stick, and to have better grip he attached a fork (山) to its tip. Unfortunately he accidentally sticks the fork into a receptacle (凵) on the ground of the mountain and gets shocked.

腰 = 月 + 要 : Maud Younger (y) is teaching the moon (月) how to dance in front of the aorta (ao1). She tells him again and again that he absolutely has to (要) use his hips (腰) more, as it is very important (要).