不夠

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

够 = 句 + 多 : Guy Fawkes (g), the grammar nazi (句) and Manny Kant (多) want to play sheepshead in the outhouse's bathroom, but they're not enough (够) people. They are only enough (够) for skat.

This mnemonic may be a little lame, but it has to be enough (够). I have been thinking about the above sentence (句) many (多) times.