Why don't you...

... shake off your inhibitions?
... sing in public?
... dance exuberantly in your car?
... participate in a poetry slam?
... paint your fingernails in alternating colors or rainbow stripes?
... go line dancing with a few friends?
... sing a lullaby to your love or your grown child?
... try karaoke?
... do something that makes you nervous?
... volunteer for dunking booth at your child's carnival?
... be the loudest one singing "Happy Birthday"?
... wear a hat all day? (one that isn't a baseball cap)
... make funny faces at strangers as you look through a store window?
... wear the macaroni necklace from your child?  All day, and not just till you get in the car.
... actually sing instead of mumble the National Anthem?
... try square dancing, pottery, piano lessons, ballet, belly dancing, theater - whatever it is you've been longing to do?
... remember that you are free, and nobody is laughing?
... decide, "Who cares if they do laugh?"
... be your own best, most silly, happiest self?