The Cat's Ass 

Being genrally awesome, something that is really, really sweet.

there are also varitions such as The Cat's Meow

person A: "Hey man look at this sweet new game"

person B: "WOW! that's the cat's ass!"

The Cat's Ass by FathaFunka July 4, 2010

The Cat's Ass 

Shouted in moments that often define a great joy or something spectacular in nature.Thought to be awkwardly Canadian in origin, circa 1960s Manitoba Province, this phrase was recently brought back to life in the Midwest United States of America. As of 2018, variations of the word have been heard as far south as Memphis, Tennessee.

My hotel has a bidet! That's the cat's ass! I've never felt so fresh so clean. I am going to purchase one upon my return home.

The Cat's Ass by Bidet Dave September 6, 2018

lick the cat's ass 

the act of doing nothing; dire boredom

guy 1: "What's up?"

guy 2: "I've just been staying home every night lately, licking the cat's ass."

lick the cat's ass by Cubi August 27, 2005

the cats ass 

A niftyier way of saying cool, that is the shit, or this is wonderful. It is also used to say that someone or something is really clever or intelligent.

the guys at holybullshit.com are the cats ass.

the cats ass by James Bourne February 20, 2004

the cats ass 

something to be fucked by Ganj4 on a weekly basis when he isn't getting any <3

Ganj4 Mmmmmmmmm, I'm gonna dip my meat in the cats ass

the cats ass by Sway March 26, 2004