Have Your Heart in Your Mouth

Have your heart in your mouth means:

This expression means that you’re really scared or anxious about something. The ancient Greek poet Homer used the phrase thousands of years ago when he wrote the famous poem The Iliad, and people have been using it ever since. When your heart starts pounding so much that you can feel a thumping in your throat, it may feel like you "have your heart in your mouth."

other links:

Butterflies in the Stomach

Mistakes and Experiences

Be bold when you loose

Over Come Three Things