The unintentional but unavoidable girth/tightening in a heterosexual male's pants due to the witnessing of another male's unbelievable stunts and/or acts.
Most common triggers to cause an unavoidable broner include but are not limited to, are: Chuck Noris, Jason Statham, Arnold, The show 'Cops', Showcase Action.
To calm a broner down, one must immediately watch 10 mins of any of the Twilight movies. Or listen to something by Lady Gaga. Actually, any attention to something that resembles a male covered in glitter, and lots of make up should do the trick.
I totally got a broner after watching 'The Expendables' tonight
word of the day: October 18, 2009
A slang term used to explain the phenomenon during which a fiercly heterosexual male achieves an erection (or, "boner") for or while in the company of one of his male friends (or, "bros"). This may only occur while engaging in all-male activities, particularly those which include feats of strength or displays of hyper-masculinity. Upon achieving a broner, the man in question is often known to exclaim, "dude, suck that shit!" or "meet me in the shower."
The way you creamed that linebacker gave me a total broner.
An unintentionally manly inspired boner
You're a guy getting a massage from another guy, and its nice, its relaxing then all of a sudden you get a little tingle; that my friends, is a 'broner'.
When a fan of my little pony get's an erection.
When Derpy first spoke I got a wicked broner.
An unintentional man-inspired boner
My masseuse was a guy and during my massage I popped a slight broner.
The accidental erection, or boner, induced by a male friend.
Oh shit, we gotta stop wrestling, i'm getting a broner.
An erection inspired by the actions of your buddy- be they sexual or just plain impressive.
“Dude, I saw you catch so much air off that jump that you gave me a broner."
An unintentional boner from your guy friend.
Dude check this out! stop man your totally givin me a broner right now.