A man who don't take none of yo shit, an alpha male in a world of betas and omegas. Someone who is transcendent of norms and tradition in the name of being a a god damn man
Secondly, "feeling the Payne" refers to being the victim of Major Paynes wrath.
Thirdly, a character portrayed by Damon Wayans in a 1995 comedy titled " Major Payne"

The Major is a psychopathic Nazi Cyborg from the Anime Hellsing, despite being a 'Nazi', he shows no symbols of being one aside from the obvious Swastika, and the intentional burning of a Swastika into London (Hellsing) using refitted V1 and V2 rockets. His personality is that of Hell personified, he loves war, he does not care if he wins or loses, he wishes to stir up as much chaos and destruction as he can before his army is stopped.

The Major commands an army of 1000 Nazi Vampires and leads the group known as 'Millennium', a reference to the thousand year Reich. He also owns three gigantic badass zeppelins.

Having someone compare you to this character is NOT a good thing.

Slang term for something of big time, major, gigantic or huge proportions.

A very big loss in sports or when getting rejected.

He talked about everything and nothing really. He arrived with a new wave of optimism and disappeared without a bat of an eyelid (mainly due to the UK's adoration New Labour as they swept into Downing Street).

Alright kind of bloke in truth, could've fulfilled any other job in Government at the time to a high standard except that of Prime Minister!

cba, of course, is the popular abreviation that is used throughout the english speaking world.

The term, major cba, places greater emphasis of how unmotivated an individual may feel.

A well-sorted, wise and helpful friend. Hip without being a hipster. An admired person.

This is exemplified in the Steely Dan song, "Any Major Dude Will Tell You"