The act of two guys taking the bromance joke too far coupled with excessive one-way physical contact of a non-sexual fashion. Usually when one man accomplishes something non-trivial by the collective definition of 'Dude, that was awesome!'.
"If you guys are done brojobbing each other, can we get down to business?"
Girlfriend A: What's the hell? It's just a video game.
Girlfriend B: Seriously. We're about to see a brojob money shot.