You don’t know why he says OMAHA? He was offered $800 dollars to his charity by the Omaha, chamber for every time he said the word. He raised something over $28,000 for his charity so far.
He yells it repeatedly because he needs lots of filler for his time clock hogging snap counts. I don’t know when he started, but he’s done it every game I’ve seen the 49ers in this season.
Later the Omaha Chamber got on board for the playoff game donating $24.8k to his kids at risk charity. Some round that up to 25. Haven’t read if they are carrying it over to the SB.