Henry Winkler shares house rules his 7 grandkids must follow

Arthur “Fonzie” Fonzarelli may have lived by his own code of cool, but when the legendary Henry Winkler welcomes his grandchildren into his home, there are still a few simple ground rules everyone respects.

The beloved Happy Days icon, now 80, has traded leather jackets for story time, and the role he clearly treasures most today is being “Papa” to his growing family.