noun, Internet, figuratively, neologism
something only a fool will buy; fraudulent deal
“你居然買了什麼氫氣水？那不是智商税是什麼？”
“你居然买了什么氢气水？那不是智商税是什么？”
“ nǐ jū rán mǎi le shén me qīng qì shuǐ ？ nà bù shì zhì shāng shuì shì shén me ？ ” "You actually bought those 'hydrogen-infused water'? If that's not a scam what else could be?"