It’s easy, you get the red pages… Or the blue pages… Oh crap, there is green pages?! WTF is this white page!!!

Get the D’nii out of here!!

It was very common in text books when showing nested loops

int nWhatTheCount = 0;
for (int i = 0; i < 10; i++) { 
    for (int j = 0; j < i; j++) { 
        for (int k = 0; k < j; k++) { 
            for (int l = 0; l < k; l++) { // and on, and on
                nWhatTheCount++;
            }
        }
    }
}