The strongest response is usually calm, dismissive, and confident. You want them to look like they’re seeking attention while you look completely unfazed. A few styles: Cold: “If that’s what you’re here for, you’ll have to do better than that.” Dismissive: “You’re confusing my patience with vulnerability.” Cutting: “That’s an embarrassingly transparent attempt to get a reaction.” Confident: “You can try. I’m not particularly impressed by threats from strangers.” Very dry: “Noted. I’ll try to survive the ordeal.” Boundary-setting: “You’re welcome to disagree with me. Harassment is a different matter.” The one I’d choose for maximum “don’t fuck with me” energy without “sounding like a tryhard”: “You’re confusing my patience with vulnerability.” It makes you sound controlled rather than angry—which is generally much more intimidating than trying to out-insult them.