One North Carolina super fan sprang into action after the big Bill Belichick news broke this week ... with a proud alum rushing to trademark "Chapel Bill" shortly after the legendary coach announced he was taking his talents to the Tar Heels football program.
TMZ Sports spoke with 2000 grad Anthony Proscia -- who filed papers Wednesday -- and he said his main goal with the move was to ensure the viral phrase didn't fall into the nefarious hands of the school's hated rival fanbases over at Duke or NC State.