Nothing Man 

A song by Bruce Springsteen. Nothing man is said to be about how firefighters, police, EMT, soldiers etc. do so much for people, and expect so little in return, and still feel they are just like everyone else, just average joe's.

Adam's a firefighter, but still feels no one owes him anything, and that he is a regular guy. He is the nothing man.

Nothing Man by Mark LS January 14, 2008

Desperate man with nothing to lose 

When you are willing to do absolutely anything to get what you want and are inclined to go to great lengths to do so.

Shaun is a desperate man with nothing to lose

Desperate man with nothing to lose by Qanon May 26, 2018

Nothingman 

Goodish song by infinitely cool band - Pearl Jam

They're playing Nothingman on the radio.

Nothingman by Abhishek June 24, 2005

Nothingman 

Term inspired by the Pearl Jam song "Nothingman". Refers to someone who is visibly depressed but when questioned as to what's wrong responds with "Nothing, man."

Dude: What's wrong with Steve?
Other Dude: Dunno, he's being a Nothingman. Maybe we should give him some space.
Dude: Yo, Steve, what's wrong, man?
Steve: Nothing, man..

Nothingman by Man of the Flag June 7, 2010