1. Any location or environment (dorm, house, campgrounds, etc.) in which bros can be bros and can bro it up to almost no extent.

2. A service dealing with strictly bro-to-bro contact, correspondence, or exchange. Includes otherwise open social networking sites in which the user only adds bros as contacts.
1. Dude 1: Why does everyone call Mike's place the Brost Office?

Dude 2: Because there's no rules, no neighbors, and all the booze you could ever dream to have.

2. Dude 1: Did Jim tell you when the party's at?

Dude 2: (logging in to Facebook) I'll check my Brost Office right now and see.
by Brahfizzle April 30, 2012
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