There are more Indians in OK than any other state, based upon tribal membership rolls. Each tribe controls who can be on their rolls by federal law. As to “real Indians” and what amuses them, please provide a definition and example.
By way of full disclosure, I’m not an enrolled member of any tribe. I’ve lived in OK since the age of 17 (now 65) and that time has been divided between areas assigned for tribal relocation in the 19th Century and central OK which was originally known as the Unassigned Lands. Those Unassigned Lands were the ones settled by the various “land rush” events of the late 19th Century.
I lived in OK from 9mos until I was 23.
It never occurred to me that it was in any way unusual that I had Indians in my classes, or that about half the guys in our group were Indians.
I never knew it was unusual that I drank and played pool at Indian bars, or that my best pool-shooting buddy was a full-blooded Kiowa Apache.
None of those people would have thought my use of “real Indians” was unusual. Pretty much means somebody who has enough Indian blood that he looks Indian, or can prove his Indian background with paperwork.