Charlie Brown Mexican is a Mexican restaurant in the alley behind Robinson Sukhumvit, near Asok Station and Terminal 21 in Bangkok. It serves Mexican street food along with tacos, quesadillas, enchiladas, fajitas and taco salad, plus margaritas and sangria. Orders are placed using a photo menu on an iPad, and customers can take photos wearing Mexican-style hats. Nacho chips are not free to refill even if you ask for more.