something that is tinted a shit green and should never be food. It originated while promoting the Shrek movies. But don't be a consumer whore and buy products that say "Shrek" on it, especially if its food, because you'll probably lose your appetite from its color (shit green).
2. Taking a dump on something and turning it green.
1. If your Rice Crispie Square, Kraft Dinner, or Cheeseburger is shrekified, its probably tinted green, like Shrek.
2. Ma'am, we just shrekified your face.