落井下石

落 = 艹 + 洛 : Lenny Lemur tried to grow some artificial lawn in the observatory's bathroom, but to no avail. He even put up a star for the light and provided bottled water, but the artificial lawn didn't grow. To make matters worse, the star is about to fall into the bathroom's well.

井 = 二 + 丿 + 丨 : Joan of Arc (ji) is digging a well (井) inside the engine ((e)ng3). At first she was doing it by hand, but then she hooked up a capacitor (二) to a banana (丿) and a dinosaur bone (丨), which dig for her using the electrical energy.

下 = 一 + 卜 : Mnemonic symbol: from the up/down logic, and a little bit the shape of the character, a ladder.

Xi Shi (xi) is on a retreat in the ashram. Using a voodoo staff (卜), she divined that next (下) week she'll have to play the flute (一) sixteen hours per day. Because she hates playing the flute, she climbs over the ashram's bathroom (a4) wall using a ladder (下) to escape.

石 = 丆 + 口 : Sherlock Holmes finds the space station's entrance blocked by a big rock. He uses a wind wheel and a mandarin to build a lever, with which he is able to move the rock.

石 = 丆 + 口 : Sherlock Holmes finds the space station's entrance blocked by a big rock. He uses a wind wheel and a mandarin to build a lever, with which he is able to move the rock.