"No! I'm taking it seriously," Lin Yifan responded. "If you surrender now, you're admitting defeat. And if you lose, you should keep your promise and live-stream yourself eating shit."
"Big Bro! Please spare me! I really don't want to live-stream myself eating shit. You can ask me to do anything else," the Street Overlord Big Bro pleaded.
"Okay! Not live-streaming eating shit is fine, then you'll have to live-stream jumping off a building!" Lin Yifan agreed to Street Overlord Big Bro's request.
"Jumping off a building? Alright! I can do that!" Street Overlord Big Bro readily agreed.
In fact, he had found a loophole in Lin Yifan's words. Jumping off any floor counts as jumping off a building; so if he jumps from the first floor, he wouldn't die, at worst he'd get some minor injuries, which is much better than live-streaming eating shit.
However, what he didn't know was that Lin Yifan had already anticipated this.