[rdtsc]

I discovered this on my own. English is my 3rd language so while walking in a bad part of town and teenagers looking for trouble started to get interested me. I got nervous and responded with nonsense, by accident. They all froze, as if their brains glitched for a couple of seconds. That gave me enough time to walk away far enough for them to not bother with me.

Since then I used it multiple times. Accidentally bumped in a drunk person's girlfriend at a festival. I apologized but he was getting aggressive so I said "Alright, I'll talk to you later at 4" and walked away. He drunk brain was presumably trying to make sense of my gibberish.

With pan-handlers (which I admit is rude) when they ask for money I just say "No thanks, I'm good". As if they were offering me something.

[tzmudzin]

You can go for plain "No thanks" as a slightly less variant. Still works, but does not emphasize your "superior" status and can be passed on really friendly, as when "thanking them for an opportunity to help them" (which you don't need to use).