Thank you for sharing! I had not heard of this before. I particularly enjoyed this bit

Farang khi nok (Thai: ฝรั่งขี้นก, lit. ‘bird-droppings Farang’), also used in Lao, is slang commonly used as an insult to a person of white race, equivalent to white trash, as khi means feces and nok means bird, referring to the white color of bird-droppings

That’s so colourful. I love it.

It also made me think of the fictional race in Star Trek, the Ferengi. At least according to Wikipedia that is precisely the origin of the name!