頃刻間

顷 = 匕 + 页 : The Queen of Hearts (qi) has to wallpaper one hectare (顷) of the engine's walls ((e)ng3). Although her only tool is a ladle (匕) she finishes the whole hectare in a moment (顷).

刻 = 亥 + 刂 : Mnemonic symbol: an engraver.

The boar cannot believe it when it meets Karl Marx in the elevator's bathroom! Bewildered it asks for an autograph but has nothing except for a kitchen knife and an engraver. It takes Karl Marx a quarter of an hour to engrave his message in the kitchen knife: "Dear boar, keep on fighting capitalism! Yours, Karl."

间 = 日 + 门 : Mnemonic symbol: a changing cubicle.

间 = 日 + 门 : Joan of Arc wants to try a new approach of solving earth's energy crisis. In front of the anthill she set up a changing cubicle and invites the sun to try it out. The sun doesn't know that the Joan of Arc installed a trap door inside of the changing cubicle and plans to exploit the sun as quasi inexhaustible energy source once she captured her.