You know this happens. If you’re white and you ask for the hottest thing they’ve got at an Indian or a Thai place or something, you don’t get the hottest thing they’ve got. Unless you go there with a friend of the matching ethnicity and he orders for you or you’ve been there enough times that you’re a regular and have sent back food that wasn’t hot enough.
Also, apparently that’s how you write 5 in Thai, at least according to google. I probably drew it wrong but my excuse is that most people have pretty bad handwriting. You’d think that in Asian languages, where a mark here or there can change the meaning of a word, everyone would have fantastic penmanship but that is not the case at all. Some of it is so bad that it makes stuff almost totally illegible out of context.