the guys trip to vegas turned into a total bro-union as they hadn't all seen each other in years and had been drinking steadily for 12 hours
a group of guys that haven't seen each other in awhile getting a little extra [bromantic] with each other
"the guys trip to vegas turned into a total bro-union as they hadn't all seen each other in years and had been drinking steadily for 12 hours" What is the definition of "bro-union"?