尿
=
尸
+
水
:
Nefertiti (ni) is drinking from a water fountain (水) in the aorta's bathroom (ao4), but she doesn't notice that at the same time a ghost (尸) is peeing (尿) into the water fountain.
不
=
丆
+
卜
:
Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.
湿
=
显
+
氵
:
Sherlock Holmes (sh) is investigating a wet (湿) puddle next to an empty water bottle (氵) in front of the space station (Ø1). Although it is very obvious what happened through the conspicuous (显) empty water bottle, Sherlock still has to think hard about it.
