I'm not a parent, so I can't speak first-hand, but I've heard that it's not easy. But in my estimation, this is the best way to be a great parent: do stupid stuff with your kids.
Instead of trying to make sure your kids don't act silly in public, why not act silly with them?!
Sometimes, my mom would do stuff like this at our elementary school music concerts. And at the grocery store. And basically anywhere. As a kid we thought she was the most embarassing thing ever. But my m mom always told me, "At least I'm not a stick in the mud."
Watch this dad make his daughters' day: