Taco Bell is testing a Waffle Taco. Because… why not?
As you travel life, you’ll encounter substantial numbers of occasions wherein the “power” half of an as-of-yet uncreated metaphor comes into view. Look around, if you see a slightly unbelievable story about a waffle taco, and if the idea/image seems quite peculiar, write it down; it may come into play (with playful intent) if it later fits someone or something you need to describe metaphorically (e.g., “… yeah, that’s as likely as a Taco Bell creating Waffle Taco!).