If you see a guy wearing an OSU hat, you can say, with some degree of certainty, that he went to OSU. If you see a guy in an OU hat, you can say with nearly absolute certainty that he went to walmart.
This is the one that is probably the dumbest of all. I guess by that logic no one should wear apparel from professional sport teams or schools they did not attend or any clothing for that matter because golly gee they didn't go there, play at that level or make those clothes.
And yes I did graduate from OU so if we are going to use your vast knowledge and logic then I can wear my OU hat and apparel.