'Pull down your lower eye lash with forefinger, and eye-pierce 'starer'. They'll embarrassing acknowledge it.

However, you should be careful with kids. One kid in Fujian copied my move, and stared me right back.

If it's a cute girl, I wave to her... or at least smile (though, I'm finding about 60% of the time - or more - it's a WTF look back... the other 40% is a nice smile in return).

I offer single finger responses, either the middle finger or the pinky finger. Apparently showing people your pinky finger with a smirk on your face is more rude the showing the middle finger, it means 我鄙视你 (I despise you). And who gives a F- if they don't like it, I'm 1.91m, 125kg

Sometimes when im drunk, i convince whomever I'm with to come to the nearest restaurant with a large glass window and pick the table of whomever is closest to the window and pretend like im amazed to see a chinese person eating food, applaud everytime they use the chopsticks, laugh at everything they do and just over exaggerate every reaction. Its hilarious, and they know why its being done too, treat them like monkeys in the zoo, also dont spit on your own door step doing this.

I send them kisses, both men and women. They have no clue how to react.

ignoring doesnt work. i tried asking "shenme?", also rarely effective. i had a big card in my wallet with Staring Is Rude in chinese characters, but i only pulled it out when my wife was breastfeeding. my latest response was "shabi xihuan ningshi"/Idiots Like To Stare.

we do this kind of stuff to retain personal dignity, so it must be strange to Chinese who focus on face loss all the time. in the end, we take risks when we respond to staring, so if you have the composure, just ignore it and move on a bit faster. nothing good can come from calling out a bunch of uneducated xenophobes on their bad behaviour.

It doesn't really matter to me. I look at Chinese people now like an eagle looks at an ant hill. There isn't too much to respect and so when someone or something I don't respect is starting at me... I could care less.

It is fun to sometimes mess with them or call them out. They know staring is rude, they just think you can't say anything back to them. You don't have to be overly offensive to make them understand your point. You could say

What are you looking at? "Ni zai kan shen me?"  or What's the issue? "Ni you shen me shi?" or "Zen me yang?" What happened?

This is usually enough for them to snap out of their ignorant stupor. Most are just curious... dumb and curious.

I had a kid once come up to me and scream "Weigouren!" as he was pointing towards me with his entire extended family looking at me, I turned around, did the exact same thing and shouted "Zhongworen!" and the kids face just turned turned into a blank expression with his entire family laughing at him... funny..

One time after a bad China day, I showed the middle finger to a guy stating at me. He got pissed, started shouting at me, and got all up in my face. This caused a scene around us. I stood my ground, didn't back, though I forgot exactly what I said to him. After a short while he realized I won't be intimated, back down, apologize or escalate. So the turned around, and angrily walked away.

Here is the thing though, I felt really shitty about this. Not because of the guy, he was an asshole, but because the crowd could have turned on me, he could have came back with his mates, he could have escalated or whatever else. After this I make extra sure to just ignore it.

Ignoring it has another benefit also. It makes me realize that, really, what other people think or do doesn't influence me at all. Yes, it's rude, but I'm not gonna be able to change it anway. I used to me super self conscious before, but China taught me to just not really give a crap. This was one of the most valuable personal lessons I've learned here.