Taco Bell does not actually sell chimichangas, which is part of the joke: the dish is a deep-fried burrito associated with the American Southwest, and fans love imagining it on the Taco Bell menu. Clips like this one circulate on soundboards and social feeds as food-meme audio, where the humor comes from the mashup of a beloved chain with an off-menu item. Its staying power is simple — the word chimichanga is fun to say, and fast-food humor never really goes out of style.