I've heard of beer goggles, which is just when you've drank so much beer that you don't know what's what anymore, but I've never heard of cereal goggles. It's pretty obvious why. Cereal goggles are a useless thing. At least beer goggles is a metaphor for a useful thing. Sometimes it's good not to see things as they really are. It lets you make bad decisions that later become good stories.
I wouldn't be shocked if we later saw this become a fashion trend. "Ladies, when you use milk and Cheerios on a face mask, it is so good for the pores around your eyes." All of a sudden you'll see fancy little kits with masks, Cheerios, and milk at Target selling for $25 each. I'm fine with it as long as it actually makes my skin better.