Seriously, though, I always thought the term ‘cardinal rule’ referred to some sort of religious tenet that morphed into an everyday saying about an all important directive that must be obeyed.
Well . . . suffice to say, I was wrong. Shocking, I know. But, it happens now and again.
‘cardo’, which in Latin translates to ‘hinge’ or ‘that on which something turns or depends’. Therefore, something cardinal is important because all else hinges upon it. It is a fundamental rule . . . something that is essential that cannot be deterred from.
A cardinal rule could be: Isn't it the first cardinal rule of perm maintenance that you are forbidden to wet your hair for at least 24 hours after getting a perm at the risk of deactivating the ammonium thioglycolate? 
Back to the church . . . before it was all powerful and had such a grand hierarchy and far reaching authority on everything and everyone . . . a cardinal was simply a clergyman being that he was attached to the church . . . much like a door is attached by a hinge to a building.
And back to that angry bird . . . why is it red? Well, because somehow the name cardinal went from being a simple man to a prince (of the church) and was clad all in red . . . the bird was thusly name because it was all red much likes the robes of churchly princes.
Grilled Cheese Cheese Stuffed Cheeseburger
Two Slices of Bread
Two Slices American Cheese
One Slice Swiss Cheese
One Half Pound of Lean Hamburger
Butter
Sliced Tomatoes
3 Slices Crisp Bacon
Divide the hamburger into two patties. Fold the Swiss cheese into a square and pressinto the center of one of the patties. Top with the second patty and press to seal edges. Grill or fry hamburger, until done.
In the meantime butter two slices of bread, and lay on fryingpan, add cheese to the slices of bread and grill till cheese melts and crispybrown on the other side.
Lay cooked hamburger on one of the bread and cheese slices.
Top with tomato slices and bacon.
Serve your amazing creation.
