Chinese mugwort or wormwood / moxa / to stop or cut short / phonetic "ai" or "i" / abbr. for 艾滋病[ai4 zi1 bing4], AIDS
艾
=
乂
+
艹
:
Albert Einstein (Ø) cut himself, so he wanted to treat his wound with wormwood (艾) and mugwort (艾) in the airplane's bathroom (ai4). He finds that he accidentally used artificial lawn (艹) instead, and much worse, it has been used by someone else before. Quickly he uses a pair of pliers (乂) to draw out the artificial lawn again to stop (艾) getting aids (艾).
乂
=
丿
+
㇏
:
Mnemonic symbol: 乂 looks like pliers. Maud Younger (y) is using pliers (乂) in the space station's bathroom (Ø4) to regulate (乂) and control (乂) the water flow of the sink. Using the pliers she has to pull a lot of bananas (丿) and fingers (㇏) out of the sink.
hey! / (interjection used to attract attention or to express surprise or disapprobation)
哎
=
口
+
艾
:
Albert Einstein (Ø) wants to warn the public about the dangers of aids (艾). In front of the airplane (ai1) he dresses as a mandarin (口) and shouts "hey!" (哎) at the people to get their attention.