He stared at me, the membranes snapping back and forth across his eyes.

Not able to see and so anticipate the movement, my head snapped painfully back and forth.

The flexibility of both changes with the temperature: in warm weather they snap back and forth at a different rate than under cold conditions.

The wheel snapped back and forth as the seas slammed at the rudder.

Patterns of switching snapped back and forth across the cavern.

Callahan's upper body begins to snap back and forth.

Loose clothing snapped back and forth like a banner in a gust.

It's snapping briskly back and forth, as if ready to play.

Laughter snapped forth, a sign of how taut were his nerves.

Snapping forth an automatic with his right hand, he gripped the door to his left.