That's the silliest thing I ever heard.
Dean put on his silliest grin.
That's the silliest thing you've ever said!
Lindy Smith's Cakes to Inspire and Desire shows how to make cakes that are suitable for the classiest or the silliest birthday party, for adults or kids.
You can have various categories to judge such as scariest, funniest, sexiest, and silliest costume.