Double Double Secret Menu Stuff
If you get a root beer and a shake from In-N-Out and slurp both straws as once, you make a root beer float in your mouth. Just sayin'.
Oh, and if you get a take-out shaker of Islands' secret fry seasoning, you can make In-N-Out fries even better. Shhhh. Don't forget the ketchup, or maybe some spread.