What are you smirking about ?

When I help her in the shower, we have such a giggle.

The photographer, a bachelor in his late thirties, watched the three girls giggle and was moved by something in the girls' faces that was beyond their understanding.

Spotted hyenas are often called "laughing hyenas"because their giggle vocalization sounds very much like hysterical humanlaughter.

I tried to calm him down, but he just looked at me and smirked.