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Cool guy really cool really swag money fire guy. Has huge big shiny muscles and a lot of money. Is cool
Shamus is cool
Getting your dick sucked in a dirty bar bathroom by a random skank
Her husband was banging on the bathroom door while you were getting Shamus'ed
Shamus by 17th Street Mafia March 12, 2017
Usually refers to a private detective or a cop working undercover.
"So you're a shamus, Mr. Marlowe?"
shamus by Dennis Baklan July 5, 2006
Cool swag money swag money cool guy. Big strong huge large gargantuan muscles. Has a huge amount of money and cash. And is cool
Shamus is cool
Typically a really nice and trust worthy man, who will do anything to keep his partner happy. Does not like sadness and is always looking to save people and make things better.
Shamus is such a caring man.
Shamus by App June 11, 2014

Mark Shamus 

Aka a BETA MALE (limp and suffers e.d) A people pleaser. Loves to be center of attention. Mark Shamus goes out of his way to help strangers, but craps on the friends closest to him.

Mark Shamus has 2 faces, and you will only see the 2nd one if you live with him. Fake personality, lures you in with his charm and jokes.

Totally nice guy, but WARNING don't get too close. Mark Shamus will use you only to benefit off you. He will lie to you; even when caught red handed. Will throw friends under the bus in order to keep his lie going.

If you're romantically involved with a Mark Shamus, realize that you're NOT the only 1 he's romantically seeing; there are many others.

Mark Shamus can't keep a job, gets in trouble with the law constantly, great story teller, plays the victim perfectly, has narcissistic behavior.
Friend: " There goes Mark Shamus, strapped his cape on and ready to save a ho"

"Mark Shamus out there doing ho-shit again"

Girlfriend: "why didn't you come home last night?"
Mark Shamus: (whatever comes out of his mouth is a lie)