"got to go, but will be back"
In between brb and gtg, for when gtg implies you'll be gone for too long, and brb implies you'll be back in too short of a time.
BWBB (Boys Will Be Boys) - A phrase used to express the view that mischievous or drunken behaviour is for the banter and the boys and should not cause surprise when it occurs.
The "Black Woman Bubble Protection Program" Or the BWBBP.. It is when your black friends protect all of the black women in their lives, and keep them in a "cave and thong" state.