What's acceptable, what's not, and how to eat Bangkok street food like a local.
No eating or drinking on trains — this is enforced with fines; bags of street food are fine to carry but eating on board is not permitted.
Thais generally don't eat while walking — find a stool, a ledge, or stand still; walking while eating is considered a bit uncouth.
Most stalls have small plastic chairs and low tables on the pavement — sit down, this is your restaurant for the next 15 minutes.
Acceptable for sticky rice, some Isaan food, and some snacks; Thai food is otherwise eaten with a spoon (not fork) in the right hand, fork in the left for pushing.
Thais use a spoon as the primary eating utensil — the fork pushes food onto the spoon; chopsticks appear only with noodle soups or in Chinese restaurants.