Marlboro Man

Noun (Pejorative): A person, typically a man, who performs hypermasculine traits, mannerisms, or actions with the intent of impressing or intimidating, but are instead perceived as arrogant or an attempt at hiding an insecurity.
Marlboro Men will often act stoic and unyielding in inappropriate situations that generally end with an unfavorable outcome. They will also rarely acknowledge their negative situation, often opting to present as indifferent to it.
Their performance is meant to emulate the "though guy" archetype.

Brett, quit acting like a Marlboro Man, nobody is scared of you and you're not tough.

If Tod hadn't acted like a Marlboro Man and mouthed off at the bar he probably wouldn't have gotten punched in the jaw.

There was a semi merging onto the highway, but Johnny thought he was a Marlboro Man and didn't have to move for anyone. Long story short, his truck is totaled.