
Set somebody’s teeth on edge
Emotional Reaction
This phrase often describes a strong negative emotional reaction, similar to hearing nails on a chalkboard.

Listening to the screeching violin set my teeth on edge.
Physical Sensation
Imagine the physical sensation of teeth clenching or grinding, indicating extreme irritation.

Her loud gum-chewing really sets my teeth on edge.
Exaggerated Effect
The phrase is often used to exaggerate for effect; the person is not literally annoyed to that extent.

His bad jokes always set my teeth on edge, even though I laugh.
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