Mine is: “睇橋” (Visiting the bridge)
Its a euphemism for me wanting to kill myself.
There's a bridge near where I live, I looked it up on Google Street view. There's no suicide barriers. I could just jump off.
I say that to my mother, then she just be like "want me to drive you there?" (she knows I'm talking about suicide) as like taunting me or something.
(But seriously, I'm not sure about the lethality, don't wanna end up only half dead, so nah, probably gonna get a gun for that. It's 'Murica, baby)