You too can be like this man. Well, he has handlers. There are people who recon for him, so he doesn't end up with a very unhappy time paying alms to the almighty altar of Montezuma's Revenge.
Street food is interesting in SE Asia. I've actually traveled quite a bit in this part of the world. The first foreign place that I visited was not Mexico (actually still never been there), but rather Phang Na, Thailand. That's where the Andaman Ocean Tsunami of 2004 hit. That's when I got drafted to do charity work. That's how I was forced to overcome my fear of flying, and now I fly everywhere. And, I am good at it now. Food is a major part of my travel agenda. Bangkok is pretty safe in terms of foodie adventures. Vietnam, is also very nice. Cambodia, well, that's a little interesting. That's one of the few countries in which I got traveler's sickness. And in Cambodia, I recommend beer. As with all travel, sometimes beer is safer than the water. I wasn't entirely convinced that bottled water in Cambodia was safer than beer.
Having been to several parts of Thailand, I have to say that the street food scene of the Ramkhanhaeng area is amazing. There are many areas of Bangkok with strong street food sections, but nothing really compares to the density and the variety of food items that you can get here.
So, if you get a chance, check it out. And by the way, if you so desire, you can have your grilled squid with a beer on the sidewalk next to the 7/11. No one cares.