A derogatory term for a person (typically a woman) considered immoral or promiscuous, especially a prostitute. The term "tomcat" (or "tom cat," literally a male cat) is more common when referring to a man.
As poor as a church mouse
Meaning:
Very poor; having little or no money.
A paper tiger
Meaning:
A nation or organization that gives the impression that it is threatening or powerful when, in reality, it is not.
To make a mountain out of a molehill
Meaning:
To exaggerate or put too much focus on a minor issue and make it seem like a major one.
To serve as a guinea pig
Meaning:
to be experimented on; to allow some sort of test to be performed on one.
The black sheep of the family
Meaning:
One who is unlike other family members, sometimes due to intentional rebelliousness, and often viewed unfavorably by them.
To cast pearls before swine
Meaning:
To present something valuable to one who does not recognize its worth. The phrase originated in the Bible. A possessive adjective is sometimes used between "cast" and "pearls."
To back the wrong horse
Meaning:
To support a person or an effort that ultimately proves to be unsuccessful, problematic, troublesome, or incorrect. A reference to betting on horse races.
A cat gets one’s tongue
Meaning:
used to ask someone why he or she is not saying anything
To have a tiger by the tail
Meaning:
To be involved with someone or something that is powerful and could become troublesome or threatening.