
Snap your fingers
Physical Action
Understand this refers to an actual motion you make with your hands.

During the song, everyone started to snap their fingers to the beat.
Sensory Appeal
This action is often used to grab attention audibly, especially in music.

The choir director asked us to snap our fingers softly while singing.
Not Universal
Some people find it difficult to do, so it's not an expectation in all settings.

She laughed when she tried and couldn't snap her fingers.
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