(the) shit hits the fan
US /ðə ʃɪt hɪts ðə fæn/
UK /ðə ʃɪt hɪts ðə fæn/

1.
a coisa fica feia, o bicho pega
a situation when a problem or crisis becomes public and causes a lot of trouble or anger
:
•
When the news of the scandal broke, the shit hit the fan.
Quando a notícia do escândalo estourou, a coisa ficou feia.
•
He knew that if his boss found out, the shit would hit the fan.
Ele sabia que se o chefe descobrisse, a coisa ficaria feia.