In-N-Out only makes sense if you live in California. All the food is so expensive, so to have a cheap, fast burger with great toppings (animal style) feels surreal. But I get why people don't like it and the fries suck (they're acceptable animal style).
Why is no one talking about Five Guys?
There's a possibility that Frost wants to end his career at Nebraska, but not begin it there. Coaches have a shelf-life these days. Maybe he doesn't want to run out of goodwill while he's still gaining experience.
I think he probably will be at Nebraska, but it's very possible he's saying "not yet".