As both begin to walk away, Greene throws the boy his jersey.
Greene told Adweek he knew the ad was good, but had no idea how it would "take on a life of its own".
"Prior to the commercial I was known as a mean guy. Not just 'Mean Joe,' but as a mean guy," he said.
Greene told Adweek his fame from the ad has, in some circles, even surpassed his fame from the football field.
Coca-Cola brought back the commercial as part of NASCAR's "throwback" promotion.