I'd vote for roadside BBQ mystery meat on a stick (烧烤 shaokao), but street food in China is quite regional. For me, a Shandong-style steamed big bao (savoury, not sweet dough) stuffed with all the things hits the spot.
Good mexican food is hard to come by, particularly texmex, and you can't find any texas style queso at all. People in the bay area have never heard of the stuff, even though it's on the menu at even non-mexican resturaunts and pubs in texas. I've seen it on the menu in seattle, idaho, north carolina, but the bay area is an absolute queso desert for some odd reason.
Americanized Mexican food should be distinguished from formerly-Mexican food. The southwest has it's own food traditions which are often similar, but distinct, from contemporary Mexico-Mexican food. Dismissing those traditions as "TexMex", like they were made up by Anglos is both offensive and inaccurate.
Depends on where you're at - in Metro Detroit you can usually find shawarma, Indian, Pakistani, or Thai curry, pizza, taquerias, and a Coney Island within a mile of any random place, and poutine is just a drive across the bridge.
In Beijing, in '96, it was Weiwuerzu (Uighur) rouchuanr. Cheap-ass fatty lamb on sticks, fast grilled over charcoal. Seasoned w/ chilli, cumin, and salt I think. Buy 'em by the fistfull.
I know the reputation burritos have but if you compare classic burrito to classic kebab or pizza. Nutritionally burritos are a lot better.
I am not saying they don't have calories. They have lots of calories but that's because they are filled so much and are heavy.
Burrito has a lot smaller portion of meat then kebab because of the filling. It probably has fresh vegetables (great), beans (good), rice (ok). Sauces are less fatty too often being fresh hot salsas. Guacamole is good too.
Kebabs served in bread (doner, shawarma, gyros, shish) are grilled meat dripping in fat. The vegetables might be fresh but often are pickled and (usually mix of acid/salt pickles) making whole thing saltier. There are no fillers so you have more meat. Because of the meat fat proper kebab might not even use sauces but it often does and they are based around something very fatty too.
Kebab per weight is less balanced and less healthy than burrito.
Pizza is generally even worse its just thin bread with mountain of cheese and some tomatoes.