You need to be silly to be funny.

My mother was an exuberant, silly lady.

Dorothy: Don't be silly, Toto. Scarecrows don't talk.

When the child is twelve, your wife buys her a splendidly silly article of clothing called a training bra. To train what? I never had a training jock. And believe me, when I played football, I could have used a training jock more than any twelve-year-old needs a training bra.

Dory: This is the Ocean silly, we're not the only two in here.

The whole situation was funny because I looked silly with my blue hair.