BRB

Big Rotating Building
This comes from BFB Battle For Battle for Battle For Dream Island. In which is the 4th Season Of The massively Popular Web-series Battle For Dream Island

Person 1: Hey Look it’s The BRB!
Person 2: Are you Sure this BRB thing is Safe?
Person 1: It’s fine come on I’ve Been on The BRB Thousands of Times!
Person 2: Ok I guess?

Brb

be right back

I'll brb soon :D

BRB

It's the short phrase for "Be real be***" it can be used when you know someone is lying or it's being unreal.

Text:
"Yesterday I saw your brother kissing Emily"
"BRB I know you are lying"

brb

Brb means be right back and people use it often in online games.

Oliver: Brb!
Leo: Ok, Oliver!
Oliver: I'm back!
Leo: Finally!

BRB

Be right back

Brb i gotta go take a shit

Brb

Big round booty

You have a brb

Brb

Be Right Back; online abbreviation

I will brb.