When someone is so obsessed by April Fools, they don't trust anyone and don't believe in anything on that day. This is called "April Fools paranoia".

如果一个人特别在意愚人节，他们在那天就不肯相信任何人和任何听到的事情。这就是“愚人节妄想狂”。

Example:

-Hey man, wanna go see a movie tomorrow?

-Haha, I see what you did there, you almost had me!

-Dude, stop with this April Fools paranoia, I'm serious!

甲：老兄，明天想去看电影吗？

乙：哈哈，我知道你想干嘛，你差点骗倒我了！

甲：拜托，别再做“愚人节妄想狂”了，我是认真的！