Hot or Cold???

For some reasons, 'uncles' and 'aunties' in coffeeshop will always say "Syo" (Hot!) to ask people to give way to them when they are serving food in their hands. The funny thing is that we once heard an uncle saying "Syo" (Hot!) when he was serving Ice Kachang! Isn't that cold dessert? Haha... Our unique culture :P