(one's) heart misses a beat
One feels a flutter in one's chest or stomach from fear, nervousness, or excitement. My heart missed a beat when I saw that the doctor was calling with the results from the test. I swear, my heart missed a beat the first time I saw my wife. My heart misses a beat every time I'm called into my boss's office.
heart misses a beat
(One) experiences nervousness or excitement. I swear, my heart missed a beat the first time I saw my wife. My heart misses a beat every time I'm called into my boss's office. No wonder she took off running—her heart misses a beat whenever there are bees around.
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