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I am in Bangkok as well, and I have noticed that perversion with escalators as well (not much different from HK or Taipei though). The part that always makes me giggle is when they say "Take care of your children" 
Oh! Then they got on a moped with their toddler, no strap, no safety, no helmet, hand the toddler to the driver, and ride off down the street between cars no problem. BUT WATCH OUT FOR THAT BABY EATING ESCALATOR!
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