a statement that is used to define quality and/or quantity. It's a step above fat as fuck; much more emphasized and powerful. Protein helps build muscles, and fat makes you fluffy, therefore protein > fat.
1. Jack: "yo did you see that fine chic at the gym yesterday?"
Bob: "ya dawg she was protein as fuck!!"
2. Joey: "Look at all this food on the table!"
Roxy: "ya it's protein as fuck!!"