If there's anything humans are good at, it's creating bizarre foods. This isn't really TOO out of the box, though I am offended by the term "burrito" being used for something like this.
There's this place in Las Vegas called Creamberry that has created a Cotton Candy Burrito. I'll stop right there, because the idea of ingesting that much cotton candy makes me feel like my blood sugar is out of whack. So, the "tortilla" is what looks like gummed out cotton candy. The "meat" consists of ice cream, topping, and more ice cream, and more toppings. Rest in Peace, Butt.