Springs
Why was the spring so nervous? Because it was wound tight Same word, two meanings literal wound (coiled) A spring compressed or coiled into a tight configuration. figurative wound up (anxious) Nervous, tense, or emotionally stressed. The phrase 'wound tight' exploits the double meaning of 'wound' as both the past tense of 'wind' (to coil) and as an adjective meaning tense/anxious. !
Like: