Add Yahoo as a preferred source to see more of our stories on Google. The In-N-Out restaurant on Route 66 in Azusa is shown. (Robert Gauthier / Los Angeles Times) There's one number In-N-Out customers ...

The In-N-Out restaurant on Route 66 in Azusa is shown. (Robert Gauthier / Los Angeles Times) There's one number In-N-Out customers won't see on their receipt — the number 69. "In-N-Out will not give ...