非正常

非 = 三 + 丿 + 丨 : Mnemonic symbol: a negative film (photography).

Frankenstein's monster (f) made an effort to photograph the Eiffel Tower (ei1), but now his negative (非) is a big mess. In front of the tower he set up a camera on a Cartesian coordinate system (三) as a tripod, and he attached a banana (丿) and a dinosaur bone (丨) to the camera so that he can finely tune the angles. All was for naught as he now holds the messed up negative in his hands.

正 = 一 + 止 : Mnemonic symbol: a stick-figure with straight lines. James II of England (zh) really has to use the engine's bathroom ((e)ng4), but there's a stick-figure (正) blocking the stalls with a barrier (止). The stick-figure measures with a flute (一) whether James is tall enough to go. James stands very straight (正) to make himself as tall as possible.

常 = 小 + 冖 + 吊 : Mnemonic symbol: the centennial light, a light bulb which will shine forever and ever.

常 = 小 + 冖 + 吊 : Charlie Chaplin is fighting his way through anglepod's underbrush with a coat hanger. The anglepod has not been visited in a hundred years, and with his coat hanger, Charlie Chaplin has to cut down a lot of daisies. Finally he found what he was looking for: the centennial light, protected from the daisies and the rain by a cooking top.