a big shot/wheel American & Australian, informal
an important or powerful person in a group or organization
Mr Madison is a big shot in the world of finance.
a breath of fresh air
someone or something that is new and different and makes everything seem more exciting
Angela's like a breath of fresh air when she comes to stay.
After all the criticism, his positive comments came as a breath of fresh air.
be all ears
to be waiting eagerly to hear about something:
I'm all ears - tell us what they had to say.
be all eyes
to watch someone or something with a lot of interest:
We were all eyes as the Princess emerged from the car.
have butterflies (in your stomach)
to feel very nervous, usually about something you are going to do
She had butterflies in her stomach as she walked out onto the stage.
for a song
very cheaply
This is one of my favorite pieces of furniture and I got it for a song in a market.
Property prices have come right down - houses are going for a song (= being sold very cheaply) at the moment.
go by the book, do sth by the book
to do something exactly as the rules tell you