facebook brofficial
When you officially declare someone your bro no matter their gender by putting them on your Facebook as your brother, even if they're a girl or a goat.
I just made my ex my bro on Facebook. Now we're officially brofficial. You're welcome, universe.
My cousin is a girl, but I made her my bro on Facebook. She's brofficial now. Deal with it.
I put my dog on my Facebook as my bro. That's brofficial. You're not real unless you're brofficial.