愚笨

愚 = 心 + 禺 : 禺狨王 (禺) gives Yu the Great (yu) his heart (心) in the space station's kitchen (Ø2). Yu the Great is very moved and just as she is about to take it 禺狨王 snaps it away, exclaims that it is just an April Fools' (愚) joke and calls Yu the Great out on how dumb (愚) she is.

笨 = ⺮ + 本 : Beelzebub (b) is very stupid (笨): He wants to get rid of some roots (本) by flushing them through the toilets in the encampment's bathroom ((e)n4), but they get stuck easily and he has to push with a bamboo stick (⺮). It would be much easier to just use the trash can.