A bromantic evening that involves lots of bromosexual activities between bros. It is brotacular and cannot exist if females or very feminine males are present. It is almost as good as sex. What happens between bros during this time, stays with the bros. Lots of alcohol is typically consumed to enhance the broing out, but this is not a requirement. At the end of the day, if the bros need anything but each other then they really aren't bros to begin with.
Those that bro out are among the best men a girl will ever meet. And she does not have to understand it's significance, but she must accept it or be left to weaker boys who don't deserve to be called men.
Bro #1: Bro, you know what time it is?
Bro #2: What time is it?
Bro #1: BRO OUT TIME!!
Bro #2: YES! Let's get these girls outta here
Bro #3: My favorite part of the evening! Man I fuckin' love you guys