(one's) heart is in (one's) mouth
(one's) heart is in (one's) mouth
(One) feels extremely nervous, fearful, or anxious. Our hearts were in our mouths as we waited for them to announce the winner.
one's heart is in one's mouth
Fig. one feels strongly emotional (about someone or something). (See also have one's heart in one's mouth.) "Gosh, Mary," said John, "My heart is in my mouth whenever I see you." It was a touching scene. My heart was in my mouth the whole time.
your heart is in your mouth
If your heart is in your mouth, you feel extremely anxious or nervous, because you think something unpleasant may be about to happen. Note: The heart is traditionally regarded as the centre of the emotions. My heart was in my mouth when I walked into her office. `Wait!' a rough voice commanded. Nancy stopped, then turned, her heart in her mouth.