We should know idiomatic expression!!!

Catalina: Hi! John, is an awful day, isn’t?
John: yes, it’s raining cats and dogs!
Catalina: Really? (Looking above) I don’t see anyone.





Horacio: Look at what I bought yesterday!
David: wow, you may have spent a lot of money on these!
Horacio: yeah
David: you shouldn’t waste so much money; you should save for a rainy day…
Horacio: (confused) but instead of bills, an umbrella is better!