You wanna talk about Vape Tongue. Let me tell you a story, I was visiting Shanghai dropping off samples doing the door to door thing and one of the guys there (broken english) mentioned how he hated the fact the taste goes away over time. I agreed and we sort of laughed and drank a coke. (The vape stores there absolutely bask in American Culture. It's pretty awesome to see the inside some of the vape stores with the statue of liberty pictures hidden in the back)
So anyway the guy opens a bottle, drops some on his hand and before I could open my mouth licks the liquid. (mother of all things vape holy) Turns out this is a really common thing in China. (I saw it in multiple stores) When vendors bring liquids to suppliers/retailers, they open the bottle, drop on the back of their hand and I kid you not, lick the liquid. Bah, that's scary. But I suppose.... at least they get the full flavor affect.
I told one guy "you really shouldn't do that" his reply "dis liquid hear, es more fresh than the rain that falls from China's sky"