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.