1920s Lingo describing someone (something) who is great, incredible or special. Usually indicating stylishness or innovation. Pajamas were a relatively new fashion in the 1920s. The term "cat" was beginning to be used as a term to describe the out going and unconventional jazz-age flappers.
That girl wearing those Paris Hilton sunglasses must think she's the cats pajamas.
Those crazy rinestone studded platinum teeth are the cat's pajamas!
by Thomas the Bombest May 10, 2007
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50's slang for something that is cool beyond imagine.
The new elvis record is the cat's pajamas
by phi April 25, 2004
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Someone who is funny, chill, or awesome in all aspects.
Someone who has swagg.
"Who's that? "
"Oh, thats Armando Mijares, Hes the The Cat's Pajamas. "
by GertrudeT333 December 4, 2011
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Slang Used in the 20’s, this expression is very similar to "cool."

Also the name of my kitty rescue. Save the homeless kitties. Adopt now!
by cantgoback</3 January 6, 2013
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1920s slang... someone or something wonderful or remarkable.

The other definition says it's from the '50s... In the 50s, there was a strong nostalgic fad of everything 1920s, which is why this term may have been thought of as from the '50s.
by Gregory May February 13, 2012
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Awesome, very good. Apparently coined back in the 1920's, but it is still in use today.
Spike: I don't believe it! After a huge setback, Applejack is back at the front of the pack!

Pinkie Pie: She's the head of the pack, all right. The pick of the litter! The CAT'S PAJAMA'S! Oh, wait! Why would Applejack take some poor kitty's PJ's? That's not very sporting of her.
by Anonymous Brony October 22, 2011
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A good midwestern description of one great gal or guy.
Kinda like when you have an asshole who is bullying someone and instead of leaving them hanging, you answer the bully by saying “no man, you got it all wrong-they are the cat’s pajamas
by Top Dawg Pal November 4, 2020
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