I think McDonald's could fit very well into a weight-loss plan. Here is what I propose.
Breakfast: Egg McMuffin or Sausage McMuffin and coffee. Only eat one of the muffin slices and save the other one for later. Alternative: big breakfast, but only eat half the biscuit.
Lunch: Grilled Chicken or Filet-o-Fish, side salad (low-calorie dressing) and diet soda. Only eat one of the slices of bread. Could possibly have two sandwiches, or a full salad (watch the dressing) but still only one slice of bread total.
Tea: Fruit - apple slices or cuties, a slice of bread, and unsweetened ice tea.
Dinner: McDouble or Triple Cheeseburger, no ketchup, without the bread, side salad, and a small french fry (no ketchup) and diet soda. Add a can of green beans (not on the menu) or serving of broccoli. Could possibly have two burgers or a even a double quarter pounder with cheese (no bread).
Treat: Ice-cream cone or hot caramel sundae or small shake or frappacino. Or Fruit n Yogurt parfait. Or a glass of wine.
I haven't added it up, but I think its about 1500 calories, depending on the treat. I would like to try it sometime.
Update: One skinny woman ate every meal at McDonalds for a week and didn't gain a pound. Here is the Day 1 diet:
Breakfast: Coffee, Egg White McMuffin
Lunch: Grilled Chicken Snack Wrap, Side Salad with Ranch
Dinner: 1 Sausage Burrito