hit the fan

idiomatic intransitive

(idiomatic, intransitive) To have a dramatic, usually negative, effect.

Japanese Meaning

事態が急変し、悪い方向に大きく影響する / 劇的な悪化を引き起こす / 大変な混乱や問題を招く

When the audit report was published, everything hit the fan.

監査報告が公表されると、事態は一気に悪化した。

Sense（1）

(idiomatic, intransitive) To have a dramatic, usually negative, effect.

They were just clowning around, when suddenly it all hit the fan.

hits the fan

（ present singular third-person ）

hitting the fan

（ participle present ）

hit the fan

（ participle past ）

hit the fan

（ past ）