病从口入，祸从口出

病 = 丙 + 疒 : In engine's bathroom Brunhilde is proudly inspecting her bronze medal. She got it in a contest about having the craziest sickness by painting a colorful rash on her face.

从 = 人 : Mnemonic symbol: 从 looks like the legs of a rubber chicken. Two Neanderthal Men (人) are playing a game with Kitty Cat (cu) in the engine's kitchen ((e)ng2). They stand in a line and let Kitty Cat pass through (从) the tunnel formed by their legs by teasing her with a rubber chicken (从).

Mnemonic symbol: 口 shall be represented by a mandarin. Karl Marx (k-) is enjoying a mandarin in the outhouse's living room (ou3).

入 = 丿 + ㇏ : Mnemonic symbol: an enter key like on a computer keyboard.

There is a special area in the space station's bathroom (Ø4) which is filled with bananas (丿), but you have to hit an enter key (入) to enter (入). Rachel Rhinoceros (ru) uses a finger (㇏) to press the button and get access to the bananas.

祸 = 呙 + 礻 : Helga Horse (hu) tries on her new monk's cowl (礻) in the observatory's bathroom (o4), but she soon realizes a disaster (祸): in her monk's cowl, her breasts look lopsided (呙).

祸 = 呙 + 礻 : Helga Horse (hu) tries on her new monk's cowl (礻) in the observatory's bathroom (o4), but she soon realizes a disaster (祸): in her monk's cowl, her breasts look lopsided (呙).

出 = 屮 + 凵 : Mnemonic symbol: 出 tilted 90 degrees looks like "EE". "EE" is an abbreviation for "emergency exit". In front of the space station (Ø1) Chantal Chicken (chu) plugged her thornbush (屮) into a receptacle (凵), but it short circuited and immediately caught fire. Chantal has no option but to use the emergency exit (出) she came out of to go back into the space station.