People who don't know what they want
If you've never been there before go inside so you can look at a menu without holding up the line. Same for people who know they want to order something different but haven't decided what yet.
People who have large, complicated orders
If you want 2 #3s one with cheese and one with extra onions, 3 #2s one with no onions and one with a vanilla shake instead of a soda, a burger with no meat, 3 diet Cokes, 2 regular cokes, 1 soda that's half Sprite and half Frutopia, and the thing that's not on the menu but you can order it anyway...
GO INSIDE!
People whose cars are producing enough smoke to kill all life within 50 feet of it
This should be self-explanatory
