partir en couille

to go to shit; to get out of hand

→ partir
phrase Rare #52,557
to go to shit; to get out of hand Vulgar, informal expression for a situation going badly or getting out of control. The plural form « partir en couilles » is also common.
FR: Matias, ça part en couille, frangin !
EN: Matias, this is going to shit, bro!