'Happy Days' star Anson Williams shares shirtless selfie at 77 with a defiant message about aging

Anson Williams is feeling better than ever at 77.

The actor, best known for playing Potsie Weber on the beloved sitcom "Happy Days," shared a shirtless selfie Saturday while celebrating his health, creativity and continued career.

"My yearly reminder to every Boomer: NEVER let anyone diminish us because of our age," Williams wrote in the Instagram caption.

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"I’m 77. More creative, healthier...