Chicks - Girls, Cats - Boys?
The 1950's song Fever (covered, among others, by Elvis Presley) contains the following lines:
Now you've listened to my story
Here's the point that I have made
Cats were born to give chicks fever
Be it Fahrenheit or Centigrade
They give you fever when you kiss them
Fever if you live and learn
Fever till you sizzle
What a lovely way to burn
How normal is it nowadays to refer to guys as cats, and where does it come from?
According to etymnonline:
Slang sense of "fellow, guy," is from 1920, originally in U.S. Black Eng.; narrower sense of "jazz enthusiast" is recorded from 1931.
Today, you generally do not hear the term used when referring to a man. Guy, dude, bro, man, buddy and pal are more commonplace today.