How are you silly with your kids?
I tell a great poop joke. I sing silly opera songs at random times. I don't hug, I squoosh them. I'm rarely serious. I show them how to find humor in themselves. I play the Wii with them for money. I shoot almonds out of my nose. If I pass gas, I blame the dog (we don't have a dog).
We have a rule in my non singer home.
If you can't sing, sing loudly. Own it. Sell it. Bring it.