The fat man showed yellow teeth in a grin.

"What a pretty place," he said, showing all his teeth in a mirthless grin.

The one with the longer beard was showing yellow teeth in a wide grin.

The stranger showed white, even teeth in a broad grin.

He was showing his tooth gap in a mocking grin.

And Nob again showed his guns in an uncertain grin.

The man was powerful, teeth showing in a confident grin.

Calvin continued to show his teeth in a cruel grin.

The admiral showed his teeth in a grin that was more than half snarl.

I knew my teeth were showing in a nasty grin.