It's a hot one out there so stay indoors if possible and stay cool.
Our phrase for today is, I wasn't born yesterday.
This means you are not naive, gullible or unintelligent.When we say "born yesterday" it is like a new born baby who doesn't know anything because of lack of experience.
Don't think because I am a woman that I don't know the price of cars. I wasn't born yesterday.
You don't expect me to believe that, do you? I wasn't born yesterday, you know.