Her wrinkled lips peeled back on ivory teeth set in anger.

He didn't realize his lips had peeled back in a snarl.

She gasped and her lips peeled away from her teeth.

Her dry lips peeled back from her teeth, and she bit his shoulder.

When he smiled, his lips peeled back to show all of his teeth.

And don't forget altitude, he told himself, lips peeling back from teeth despite the cold wind in his face.

Miles's lips peeled back on a white flash of teeth that had nothing to do with a smile.

Its lips peeled back again and its tongue came out.

Miles's lips peeled back in a grin, cracking to bleed.

His lips peeled back again as the rage boiled up- ward.