Simple concept -- chili and cheese in a flour tortilla. Add about three fire sauces. Better when reheated in the microwave at 12:30am.
Some called it the Chili Cheese Burrito, others the Chilito. It's rightful name may be lost to time. Or it may be that the term chilito is mexican slang for "small penis". If Spicy Food Guy was a Taco Bell executive, that would be a pretty motivating factor in changing the name to Chili Cheese Burrito in a big damn hurry.
But all is not lost. There is a website devoted entirely to bringing back the Taco Bell Chili Cheese Burrito. Spicy Food Guy signed the petition. They have collected over 12,000 signatures. God love the internet.