エイプリルフール 愚人节
A post that commemorates [[April]] 1st, [b]April Fools' Day[/b], usually celebrated by playing [[prank]]s on other people.

These posts either contain the words "April Fools" (エイプリルフール) or a picture that the artist intended to make as a prank, especially if it is obvious that what is depicted is very absurd.
april fools