What is the 20 examples of idiomatic expression?

Here are 20 examples of idiomatic expressions:

1. Break the ice
2. Bite the bullet
3. Let the cat out of the bag
4. Hit the nail on the head
5. Burn the midnight oil
6. Piece of cake
7. Under the weather
8. Spill the beans
9. Cost an arm and a leg
10. The ball is in your court
11. Jump on the bandwagon
12. The early bird catches the worm
13. Cry over spilled milk
14. Call it a day
15. Kick the bucket
16. Every cloud has a silver lining
17. When pigs fly
18. A blessing in disguise
19. Beat around the bush
20. It takes two to tango