下班脑

"See you on the roof" — gallows humor for having lost catastrophic money, usually on football bets or the stock market. The unspoken second half is that the rooftop is where you'd go to jump, so the phrase means roughly "I'm ruined" said with a laugh.

"Eating noodles with the lights off" — the standard way to say you took a bad loss in the market. Broader than a stock term now: any quiet, undramatic private misery.

Literally a 'straw-stage troupe' — any operation that looks official but is actually disorganized, unprofessional, and improvised; the viral extended form 'the whole world is one giant clown show' applies that to everything.

Involution — excessive, often pointless competition where everyone works harder but nobody gains more.