The skull of the human skeleton inside it grinned at him.

Under the ancient layers of tar, the skull grinned at us.

The dead skull grinned its grin, as if proud of how very good it was at keeping secrets.

The skull grinned at him, its lips still pulled away from the teeth, a mockery of both life and death.

A human skull grinned at them from the streambed.

A threadbare rug covered the stone of the floor, and a human skull grinned to itself in the corner.

A gigantic blood-smeared skull grinned at him, its mouth the size of a shark's.

The skull grinned at her with broken teeth, but incredibly, there was an intact eye in one of the sockets.

The skulls in the bonefield grinned, enjoying the grand joke, too.

The skulls in the cupboard were grinning as in greeting.