When a fellow bro or friend is in a socially awkward situation and is outnumbered and calls for your help
Austin: "Dude, 4 rando's just sat down at the table with us. We're outnumbered."
Ryan: "Bro backup has arrived."
Ryan: "Bro backup has arrived."
by outlaw0897 July 23, 2010
Get the bro backupmug.