brociety
A brociety is a population of bros characterized by patterns of relationships between individuals that share a distinctive culture and/or interest. More broadly, a brociety is an economic, social and industrial infrastructure, made up of a varied multitude of bros. Members of a brociety may be from different ethnic groups. A brociety may be a particular ethnic group, such as the Saxons, a nation state, such as Bhutan, or a broader cultural group.
Will: Those kids from Farmington are developing quite a brociety over there.

Sean: Yeah, if they keep it up they're never going to be able to function in a real society.

Will: Looks fun to me, I just hope they don't get too bromantic.