When you say football lingo, I think of terms like "nickel" and "RPO" and "cover 2". I don't actually think of "schollie" or "natty" as football terms. Plus, I've never heard "schollies" before in my life. Just always heard and read "scholarships."
I have heard "natty," but prefer not to use it. It may be one of those phrases that was badly outdated from the very day someone invented it. Like my mother-in-law saying "delish" to mean delicious. Just never sounded right.
I'm sure this has been very helpful in answering your question.