Based on this woman's facial expression she is saying "I disapprove" or whatever right? Well, wrong. Somehow we flipped it in the modern world. Thumbs up meant kill the person, and thumbs down meant put down your swords and not kill the person. Really! Source: http://wordinfo.info/unit/3735/ip:1/il:K
大拇指朝下羅馬夫人
Colosseum、death、disapprove、down、Heads、kill、lady、Roman、Rome、thumbs、Vintage Art、woman
鬥獸場、死亡、不贊成、下、元首、殺、淑女、羅馬、羅馬、大拇指、復古藝術、女人
資料來源：openclipart ( https://openclipart.org/ )