I'm sure that you have a t-shirt that you love to show off in. It could be an old Pink Floyd t-shirt that you've had for at least 25 years (or more!) but you refuse to throw it away despite protests from the home front.
Or it can be a completely new one of the kind where there is some mindless (childish) slogan such as e.g. "You're Never Too Old to Rock N Roll".
So what? Who cares? Yes, these are exactly the thoughts that should fly through your head when your better half, best friend, family, soulmate, or whatever says that you look silly, despite they're right.
So remember: "You Are NEVER Too Old To Look Stupid"!