Last Friday I had to cancel my dentist appointment because I felt terrible. I had a headache and an upset stomach. I was sick as a dog.
Can you guess what the expression “sick as a dog” means?
Sick as a dog - means you are very ill
I just saw Walter a few minutes ago. He looked sick as a dog so I told him to go home.
Jonathan drank too much at the party last night and now he's sick as a dog!