Idioms for feelings and moods
HAVE BUTTERFLIES IN ONE'S STOMACH (You were about to board a plane for the first time.)
I had butterflies in my stomach because it was my first time flying abroad.
GET COLD FEET (You almost cancelled the trip because you were nervous.)
A day before my solo trip, I got cold feet and even thought about staying home.
ALL EARS (Your tour guide was sharing fascinating stories about a famous landmark.)
I was all ears as the tour guide shared fascinating stories about the ancient city.