Street food at night is often a welcomed snack, but check first if the place looks clean
When eating street food with any liquid ask where they take the water, if the show you a big bottle it’s ok if the show the normal water pipe dont take it. It is absolutely dangerous to eat anything with water from the public utility. Other stuff worth to check is how do they clean their plates, many only have one big pot which is filled up once and there plates etc. are washed again and again the water is not changed the whole night. Now imagine yourself what that means, Thailand nightlife has many surprises.