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n. the recognition that a male aquaintance or "bro" would be attractive to the opposite sex.
Markus: Hey I'm going out tonight with that girl Sarah from work. How do I look?

Mike: Dude, let's just say that I have a broner right now.
by WordBrah August 20, 2009
A Bro, or dude, who gets an erection when no girls are present.
John: "What the fuck Steve, you have a broner right now!"

Steve: "Oh...no thats just my pants...."

John: "Whatever man your a fucking homo."
by Landerman November 05, 2009
When you are chillin' with your bros and you get a little to excited, causing you to get a boner (or raging jimmy).
"Man when I was playing video games with the bros i got like fifty headshots, and it made me so excited that i got a broner!"
by Broseph Broski August 27, 2008
a random boner while with all males, in some cases ruins relationships with guy friends.
I was hanging out with Kevin and got a broner, he hasn't talked to me in weeks.
by travlax April 24, 2009
1. A bro's boner
2. An erection achieved while in the commission of fraternal events.
Trent: Touch my broner dude.
by Albert E. November 27, 2007
When a bro has or gains a "boner" (enlarging/hardening of the male penis or shlong)
Damn that pezza gave me a massive broner
by Caponer/ale July 25, 2009
When youre psyched for your bros
John: Dude my band just got this sweet gig at that hot new club in town

Freddy: that gives me the biggest broner
by k'ran wood March 31, 2008