(the) shit hits the fan
US /ðə ʃɪt hɪts ðə fæn/
UK /ðə ʃɪt hɪts ðə fæn/
1.
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.
•
He knew that if his boss found out, the shit would hit the fan.