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.
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).