Raining cats and dogs
Raining really hard
piece of cake
easy, simple
Break a leg
good luck!
blow your socks off
to surprise
Hold your horses
To wait or slow down
silly
all ears
listening closely
caught with your pants down
unprepared
Let the cat out of the bag
Accidentally reveal a secret
Not your cup of tea
Not something you enjoy
cold feet
nervous, having second thoughts
bursting at the seams
not fitting anymore
Butterflies in your stomach
Nervous or anxious
spill the beans
to tell a secret
zip your lips
keep a secret
at the drop of a hat
ready to go without further notice
kill two birds with one stone
Get two tasks finished at one time
On the tip of my tongue
to wear your heart on your sleeve
not afraid to show your emotions