a fool, an idiot / uselessness, futility / a tool used for counting coins

to not take seriously; to look down on

foolish, idiotic, stupid, ridiculous / useless, futile

April Fools' Day

Alternative spelling of 馬鹿野郎 (“stupid man; prick; dick”)

Someone who has poor handwriting, especially poor knowledge of writing kanji characters, due to habitual use of Japanese computer text input methods rather than pen and paper.

a jackass; a dumbass; a moron; an imbecile

idiot, moron, nimrod

Cherry trees should not be pruned, but plum trees should. Although they may look similar upon first glance, each type of tree requires its own care procedures.

April Fools' Day