The act of staying late at work, or doing any undesirable task that your boss/supervisor couldnt give you 3-4 hours ago, because he was doing nothing, just as you're about to punch out. The boss refers to you as "bro".
Exployee: "Man, I was so close to leaving yesterday and then I got bro'd for 2 hours."
Boss: "Hey bro, hold up, I got somethin' for ya"
"So you have to sort all the TPS reports? Bummer"
"Yeah, it's a real bro-job."
"How many of you fucks are staying late tonight?"
"Enough to give the King Bro his bro-ner."
"You got another bro-job?"
"What can I say? I'm a bro-bot."