Cat Got Your Tongue?

Phrase implies that a disagreeable person has entered a room
look what the cat dragged in
Whoa, look what the cat dragged in! You really look tired. Is something wrong? You know it's safe to tell me anything.
Noun a short sleep
a cat nap
I'm OK, I just got up from a cat nap. I'll look better as soon as I get a coffee in me and really wake up.
Phrase tell information that is not meant to be known
let the cat out of the bag
Don't worry, t won't let the cat out of the bag, but I know why you're so tired. You were up all night with the new guy you met last week!
Noun very heavy rain
raining cats and dogs
You're right. It was raining cats and dogs but he shared his umbrella. We walked and talked together for hours. It was so romantic!
Noun a person who shows a lack of courage or confidence
So, why are you keeping this a secret? Don't be a scaredy-cat. Are you afraid to share this great news for some reason?
Noun a person who breaks into buildings by climbing through windows
cat burglar
You've gotta understand, our relationship must be kept a secret because of his job! He is a professional cat burglar.
Noun a highly admired person
the cat's meow
He's what? That is terrible! You may think he's the cat's meow, but stealing is illegal. You can't go out with a person like this even if he's super nice to you.